Przebieg kariery naukowej

1. Dane formalne:

• Studia w zakresie fizyki teoretycznej (praca magisterska z teorii cząstek elementarnych) ukończyłem w Uniwersytecie Jagiellońskim w 1969 roku.
  
• Doktorat: w Akademii Górniczo-Hutniczej w Krakowie (Zakład fizyki ciała stałego) w 1974 r.
  
  Promotor: Prof. dr hab. Janusz Morkowski, IFM PAN, Poznań.
  
  Praca wyróżniona Nagrodą Ministra III stopnia.
  

• Habilitacja: Wydział Matematyki Fizyki i Chemii Uniwersytetu Jagiellońskiego w 1981 r.
  
  Rozprawa wyróżniona Nagrodą Ministra II stopnia.
  
• Profesor nadzwyczajny: Instytut Fizyki Teoretycznej Uniwersytetu Warszawskiego, 1991 (tytuł Profesora od 20 stycznia 1993 r.).

• Profesor zwyczajny: Instytut Fizyki Uniwersytetu Jagiellońskiego, od 1 kwietnia 1998 r.

• Odbyte staże zagraniczne dłuższe: 1978-79 Imperial College, Londyn – postdoctoral fellow; 1983/84 – Uniwersytet Paryski (Orsay i Villetaneuse) – post rouge; 1988 – 90 Uniwersytet Purdue (USA) – visiting professor; 1995/96 – Harvard University – visiting scholar. Poza tym odbyłem szereg wyjazdów krótszych (3 – 6 miesięcy).

• Obecne stanowisko: Kierownik Zakładu Teorii Materii Skondensowanej i Nanofizyki w Instytucie Fizyki Uniwersytetu Jagiellońskiego, od chwili utworzenia w 1994 roku.

• Kierownik studiów doktoranckich w Instytucie Fizyki Uniwersytetu Jagiellońskiego w latach 1999-2002 (w tym czasie liczba doktorantów zwiększyła się od 50-ciu do ponad 100).
  
• Członek Rady Nauki (Komitet Polityki Naukowej) w Ministerstwie Nauki i Szkolnictwa Wyższego.

Otrzymane ostatnio wyróżnienia:

• 1997 – Nagroda im. Marii Skłodowskiej-Curie za prace na temat lokalizacji Motta w układach skorelowanych.

• 2001 – Indywidualna Nagroda Ministra Edukacji Narodowej I stopnia za osiągnięcia naukowe.

• 2002 – wyróżnienie w UJ: stypendium im. A. Krzyżanowskiego na okres 10 miesięcy.

• 2003 – srebrny medal im. Aleksandra Volty przyznany przez Uniwersytet w Pavii za udział w utworzeniu Programu "European Doctorate in Physics" iprowadzenie cyklu wykładów na tych studiach doktoranckich w latach 2001 i 2002; wypromowaliśmy pierwszych 3 doktorów fizyki w styczniu 2003, egzamin następnych 3 doktorantów – 4 lutego 2005.

• 2003 – 2006 stypendysta Fundacji na Rzecz Nauki Polskiej (FNP), subsydium profesorskie.
  
• 2005 - Krzyż Kawalerski Orderu Odrodzenia Polski (Polonia Restituta)
  
• 2006 - Członek zagraniczny Włoskiej Akademii Nauki i Literatury (Accademia di Scienze e Lettere, Istituto Lombardo).  (Od 21 września               2006). Zobacz certyfikat.

 2. Główne osiągnięcia naukowe

Główne osiągnięcia badawcze to:

• W pracy doktorskiej: podanie półklasycznego opisu powierzchniowych fal spinowych (1974 – 75), który zgodził się bardzo dobrze z pierwszymi danymi eksperymentalnymi zespołu prof. P. E. Wigena z Ohio State.

• W pracy habilitacyjnej: dość kompletna dyskusja i poprawne wyprowadzenie formalne tzw. modelu t-J z modelu Hubbarda (rozpracowanego częściowo z K. A. Chao i A. M. Olesiem w latach 1977-78 (J. Phys. C, 1977). Praca ta ma około 200 cytowań, a kompletna (Phys. Rev. B, 1978) ma około 75 cytowań.

• Opracowanie teorii tzw. związanego polaronu magnetycznego (razem z T. Dietlem z IF PAN) dla półprzewodników półmagnetycznych. Za te prace otrzymaliśmy Nagrodę Zespołową III Oddziału Polskiej Akademii Nauk za rok 1984. Pierwsza praca (Phys. Rev. Lett., 1982) ma około 175 cytowań, a kompletna praca (Phys. Rev. B, 1983) ma około 140 cytowań.

• Podanie opisu prostych własności półprzewodników półmagnetycznych (prace częściowo we współpracy z prof. R. R. Gałązką z Instytutu Fizyki PAN i prof. J. K. Furdyną z Uniwersytetu w Notre Dame, USA). Podstawowa praca (Phys. Rev. B, 1986) ma około 180 cytowań.

• Skonstruowanie termodynamiki statystycznej przejścia metal-izolator typu Motta: podstawowa praca (Phys. Rev. B, 1983) ma około 40 cytowań, a prace zawierające w miarę kompletny model ilościowy (Phys. Rev. Lett., 1987 oraz 1991; Phys. Rev. B, 1986 oraz 1989) mają odpowiednio około 80 i 55 cytowań.

• Podanie poprawnej formalnie postaci modelu t-J z parowaniem w przestrzeni rzeczywistej (Phys. Rev. B, 1988; J. Physique, 1989). Liczba cytowań w sumie około 100.

• Opracowanie teoretyczne prac doświadczalnych przeprowadzonych na Uniwersytetach w Purdue (prof. J. M. Honig) i Chicago (prof. T. F. Rosenbaum) w USA, w latach 1991 – 96 (3 prace w Phys. Rev. Lett., szereg prac w Phys. Rev. B); w sumie kilkaset cytowań.

• Podanie modelu efektywnego tzw. magnetycznych sieci Kondo w latach 1998 – 99 (razem z doktorantem Romanem Doradzińskim z Uniwersytetu Warszawskiego). Liczba cytowań dokładnie nieznana.

• Zaproponowanie nowej metody ścisłego opisu silnie skorelowanych układów, w szczególności dla układów nanoskopowych, w latach 2000 – 2003. Liczba cytowań dokładnie nieznana. Prace te są intensywnie rozwijane; rezultatem są m. in. 3 doktoraty w przeciągu ostatniego 1.5 roku.

• Zaproponowanie oryginalnego mechanizmu parowania trypletowego w oparciu o regułę Hunda dla ferromagnetyków nadprzewodzących (2001 – 2003).

Dorobek naukowy "ilościowo"

• Ponad 220 opublikowanych prac, w tym: około 15 artykułów przeglądowych, 60 prac opublikowanych w Physical Review B i 6 prac opublikowanych w Physical Review Letters
  
• Liczba cytowań sumaryczna: około 3000 (pierwsze miejsce wśród teoretyków zajmujących się teorią materii skondensowanej na liście tygodnika "Wprost" z 2002 roku).

• Około 4 –5 referatów zaproszonych w roku, wygłaszanych na między-narodowych konferencjach i szkołach.

• Referaty naukowe w praktycznie wszystkich ośrodkach naukowych w Polsce (5 - 8 rocznie).

Główne osiągnięcia dydaktyczne

• Wypromowanie 15 doktorów: 2 w Akademii Górniczo-Hutniczej w Krakowie, 3 w Uniwersytecie Warszawskim, 7 w Uniwersytecie Jagiellońskim (obecnie mam 5 doktorantów - jedna praca na ukończeniu w ciągu najbliższych miesięcy); oprócz tego byłem ko-promotorem 3 rozpraw doktorskich (Ph. D.) zagranicą (2 w Uniwersytecie Purdue (USA) i jednej w Universita di Salerno we Włoszech).

• Prowadzę roczny wykład dla doktorantów w Uniwersytecie Jagiellońskim pt.: "Zaawansowana mechanika kwantowa: podstawy teorii wielu cząstek".

3. Bieżące prace i obowiązki

• Przygotowany materiał (w 70 %) do podręcznika "Wstęp do fizyki materii skondensowanej" (ma go publikować PWN) na podstawie wykładów uniwersyteckich w Uniwersytecie Warszawskim i Uniwersytecie Jagiellońskim.

• W ukończeniu monografia: J. Spałek i J. M. Honig: "Physics od Correlated Fermion Systems" (ma ją wydać Oxford University Press). Materiał prawie zakończony (przygotowywany prawie 6 lat !).

• Byłem chairmanem konferencji "Strongly Correlated Electron Systems" (sces'02), która odbyła się w Krakowie, w lipcu 2002 roku (konferencja ta po raz pierwszy odbyła się w Europie Środkowej). Jako jeden z głównych edytorów materiałów pokonferencyjnych, uczestniczyłem w pracach redakcyjnych, których owocem było wydanie tych materiałów w postaci dwóch tomów czasopisma Acta Physica Polonica B. Ukazały się one w 2003 roku.

• Opracowałem m. in. dwa artykuły przeglądowe: jeden do Encyklopedii Fizyki Współczesnej (rewizja do nowego wydania) na temat: "Superconductivity Mechanisms" (Academic Press, 2002) oraz artykuł "Electronic Structure: Fermi-Liquid Theory" dla Encyklopedii Fizyki Materii Skondensowanej (Elsevier Science, 2005).

Publikacje: 1972 - 2008:

1. ARTYKUŁY NAUKOWE

1.               T. Stobiecki, J. Spałek, and H. Jankowski,
"Influence of angular dispersion of magnetization on magnetoresistance in ferromagnetic thin films",
Acta Phys. Polon. A 41, 657 (1972).

2.               J. Spałek, T. Stobiecki, and H. Jankowski,
"On the influence of angular dispersion of the magnetization vector and the domain structure on the magnetoresistance in thin ferromagnetic films",
Acta Phys. Polon. A 43, 183 (1973).

3.               J. Spałek, H. Jankowski, T. Stobiecki, and M. Czyczyło,
"Review of magnetization reversal processes in magnetic thin films",
Biuletyn Polskiej Akad. Nauk, Oddział Krakowski, Nr 18, 155-218 (1973).

4.               J. Spałek,
"Surface modes in SWR spectra of surface coupled antiferro- ferromagnetic films",
Acta Phys. Polon. A 43, 635 (1973).

5.               J. Spałek and A. Paja,
"Magnetoresistance in coupled ferromagnetic films",
Proc. VIth Intern. Colloq. Magnetic Thin Films, Izdat. Vysheyshaya Schkola, Minsk (USSR), 1974.

6.               J. Spałek, L.J. Maksymowicz, and A.Z. Maksymowicz,
"On angular dependence of spin-wave resonance spectra",
Proc. VIth Intern. Colloq. Magnetic Thin Films, Izdat. Vysheyshaya Schkola, Minsk (USSR), 1974.

7.               J. Spałek,
"Spin-wave resonance spectra of ferromagnetic slab",
Phys. Stat. Sol. (b) 64, K111 (1974).

8.               J. Spałek and A. Maksymowicz,
"Surface boundary condition and angular dependence of the spin-wave resonance spectra",
Sol. State Commun. 15, 559 (1974).

9.               J. Spałek and W. Schmidt,
"Angular dependence of surface spin-wave spectra",
Sol. State Commun. 16, 193 (1975).

10.           J. Spałek,
"Stationary solution of a laser oscillator with spatial dispersion",
Phys. Letters A 51, 235 (1975).

11.           A.M. Oleś and J. Spałek,
"Spin-wave excitations in narrow s-band with inclusion of intersite exchange interaction",
Phys. Stat. Sol. (b) 79, K61 (1976).

12.           K. A. Chao, J. Spałek, and A. M. Oleś,
"Kinetic exchange interaction in a narrow s-band",
J. Phys. C 10, L271 (1977).

13.           K. A. Chao, J. Spałek, and A. M. Oleś,
"The kinetic exchange interaction in doubly degenerate narrow bands",
Phys. Stat. Sol. (b) 84, 747 (1977).

14.           J. Spałek and A. M. Oleś,
"Ferromagnetism in narrow band with inclusion of intersite correlations",
Physica B 86-88, 375 (1977).

15.           J. Spałek, M. Lubecka, and A. Węgrzyn,
"Carrier concentration and magnetic susceptibility of doped ferromagnetic semiconductors with application to EuO: Eu",
Phys. Stat. Sol. (b) 82, 107 (1977).

16.           M. Lubecka, J. Spałek, and A. Węgrzyn,
"Temperature dependence of carrier concentration and magnetic susceptibility of EuO doped with Eu",
Physica B 86-88, 995 (1977).

17.           K. A. Chao, J. Spałek, and A. M. Oleś,
"Degenerate perturbation theory and its application to the Hubbard model",
Phys. Lett. A 64, 163 (1977).

18.           J. Spałek, A. M. Oleś, and K. A. Chao,
"The effective magnetic interactions between impurity and conduction electrons for the Wolff model",
Phys. Stat. Sol. (b) 87, 626 (1978).

19.           J. Spałek, A. M. Oleś, and K. A. Chao,
"Kinetic exchange interaction for magnetic impurities in metals: nondegenerate Wolff model",
Phys. Rev. B 18, 4738 (1978).

20.           K. A. Chao, J. Spałek, and A. M. Oleś,
"Canonical perturbation expansion of the Hubbard model",
Phys. Rev. B 18, 3453 (1978).

21.           K. A. Chao, A. M. Oleś, and J. Spałek,
"Variational method for magnetic impurities in metals",
Phys. Rev. B 17, 4339 (1978).

22.           M. Oleś, K. A. Chao, and J. Spałek,
"Variational method for magnetic impurities in metals. II. Orbital degeneracy",
Phys. Rev. B 18, 4784 (1978).

23.           J. Spałek, A. M. Oleś, and K. A. Chao,
"Effective exchange interactions and magnetic ground state of strongly correlated electrons",
J. Phys. (Paris) 39, C6-770 (1978).

24.           J. Spałek, K. A. Chao, and A. M. Oleś,
"Antiferromagnetism of strongly correlated electrons in narrow bands",
Phys. Lett. A 66, 503 (1978).

25.           K. A. Chao, A. M. Oleś, and J. Spałek,
"The Curie-Weiss susceptibility of localized moments",
J. Phys. F 8, L183 (1978); Errata: F 8, L281 (1978).

26.           J. Spałek,
"Classical approach to spin waves without LRO: I. Method and excitations in the paramagnetic region",
J. Phys. C 12, 5519 (1979).

27.           J. Spałek and N. Rivier,
"On spin-wave spectrum of systems without long-range order",
J. Phys. (Paris) Letters 40, L57 (1979).

28.           J. Spałek, A. M. Oleś, and K. A. Chao,
"Thermodynamic properties of a two-site Hubbard model with orbital degeneracy",
Physica 97A, 552 (1979).

29.           A. M. Oleś, J. Spałek, and K. A. Chao,
"Thermodynamic properties of small extended Hubbard rings",
Physica 97A, 565 (1979).

30.           J. Spałek and Z. Tarnawski,
"Static magnetic properties of doped magnetic semiconductors: Mean field approach",
Phys. Stat. Sol. (b) 94, 711 (1979).

31.           J. Spałek and K. A. Chao,
"Kinetic exchange interaction in a doubly degenerate narrow band and its application to
Fe_1-xCo_xS₂",
J. Phys. C 13, 5241 (1980).

32.           J. Spałek,
"Polaron solitary waves in a magnetic semiconductor",
Jour. Magn. Magn. Mat. 15-18, 1289 (1980).

33.           J. Spałek,
"The Falicov-Kimball model at atomic limit",
Jour. Magn. Magn. Mat. 15-18, 957 (1980).

34.           J. Żmijan and J. Spałek,
"Ferromagnetic-resonance linewidth due to a group of dislocations",
Sol. State Commun. 35, 699 (1980).

35.           J. Spałek and A. M. Oleś,
"Split-band antiferromagnet with the intermediate valence",
Sol. State Commun. 37, 571 (1981).

36.           J. Spałek and D. K. Ray,
"Itinerant magnetism of electrons in hybridized bands",
J. Phys. C 14, L159 (1981).

37.           J. Spałek, A. M. Oleś, and K.A. Chao,
"Magnetic phases of strongly correlated electrons in a nearly half-filled narrow band",
Phys. Stat. Sol. (b) 108, 329 (1981).

38.           A. M. Oleś and J. Spałek,
"Antiferromagnetism in one-band Hubbard model",
Zeits. Phys. B 44, 177 (1981).

39.           J. Spałek,
"Magnetic Properties of Strongly Correlated Electrons in Narrow Bands",
D.Sc. thesis, Jagiellonian University (1981); published in: Scientific Bulletins of the Stanisław Staszic University of Mining and Metallurgy, Kraków - 1981, Mathematics, Physics and Chemistry, No. 49, pp. 1-156.

40.           M. Acquarone, D. K. Ray, and J. Spałek,
"The Hubbard subband structure and the cohesive energy of narrow band systems",
J. Phys. C 15, 959 (1982).

41.           T. Dietl and J. Spałek,
"Effect of fluctuation of magnetization on bound magnetic polaron: Comparison with experiment",
Phys. Rev. Lett. 48, 355 (1982).

42.           T. Dietl and J. Spałek,
"Effect of thermodynamic fluctuations of magnetization on the bound magnetic polaron in dilute magnetic semiconductors",
Phys. Rev. B 28 1548 (1983).

43.           M. Acquarone, D. K. Ray, and J. Spałek,
"Cohesive energy in strongly correlated electronic systems in non-degenerate band approximation",
Journ. Phys. C 16, 2225 (1983).

44.           J. Spałek, M. Acquarone, and D. K. Ray,
"Mixed valence effects in itinerant magnetism",
Journ. Mag. Magn. Mat. 31-34, 467 (1983).

45.           T. Dietl and J. Spałek,
"Effect of fluctuations of magnetization on the bound magnetic polaron",
Physics of Semiconducting Compounds. Proc. of Conference Ossolineum -Wrocław (1982), p. 143.

46.           J. Spałek, A. M. Oleś, and J. M. Honig,
"Metal-Insulator Transition and Local Moments in a Narrow Band: A Simple Phenomenological Theory",
Phys. Rev. B 28, 6802 (1983).

47.           J. Krok, J. Spałek, S. Juszczyk, and J. Warczewski,
"Effect of Double Exchange on Magnetic Properties of Cu_xZn_1-xCr₂Se₄",
Phys. Rev. B 28, 6499 (1983).

48.           J. Krok, S. Juszczyk, J. Warczewski, T. Mydlarz, W. Szamraj, A. Bombik, P. Byszewski, and J. Spałek,
"Transition from Helimagnetism to Ferromagnetism in Cu_xZn_1-xCr₂Se₄",
Phase Transitions 4, 1 (1983).

49.           J. Spałek,
"Localization Induced by Electronic Correlations". Physics of Semiconducting Compounds, Materials of the International School, Jaszowiec, Poland, 1983; published by Ossolineum (Wrocław, 1884) p. 97.

50.           T. Dietl, J. Spałek, and L. Świerkowski,
"Bound Magnetic Polarons in Semimagnetic Semiconductors",
Physics of Semiconducting Compounds, Materials of International School, Jaszowiec, Poland, 1983; published by Ossolineum (Wrocław, 1984), p. 112.

51.           A. Lewicki, Z. Tarnawski, R. R. Gałązka, and J. Spałek,
"High-Temperature Susceptibility of CdMnSe and CdMnTe",
Physics of Semiconducting Compounds, Materials of International School, Jaszowiec, Poland, 1983; published by Ossolineum (Wrocław, 1984), p. 396.

52.           A. Kołodziejczyk and J. Spałek,
"Spin fluctuations in a very weak itinerant ferromagnet: Y₄Co₃",
J. Phys. F 14, 1277 (1984).

53.           J. Spałek,
"Renormalized wave equation for an electron coupled to the thermodynamic fluctuations of magnetization",
Phys. Rev. B 30, 5345 (1984).

54.           M. Acquarone, D. K. Ray, and J. Spałek,
"A discontinuous transition to ferromagnetic phase in a two-band itinerant ferromagnet",
Solid State Commun. 51, 445 (1984).

55.           J. Spałek,
"The kinetics of bound magnetic polaron and the decay rate of thermodynamic fluctuations",
Phys. Rev. B 32, 3900 (1985).

56.           J. Spałek and K. A. Chao,
"Electron Hamiltonian renormalized by optical phonons in a two- orbital model of mixed valence",
J. Mag. Mag. Mat. 47-48, 305 (1985).

57.           M. Acquarone, D. K. Ray, and J. Spałek,
"Magnetic ground state and the mixed valence in doubly degenerate narrow-band system",
J. Mag. Mag. Mat. 47-48, 388 (1985).

58.           J. Spałek, D. K. Ray, and M. Acquarone,
"A hybridized basis for simple band structures",
Solid State Commun. 56, 909 (1985).

59.           J. Spałek, A. Lewicki, Z. Tarnawski, J. K. Furdyna, R. R. Gałązka, and Z. Obuszko,
"Magnetic susceptibility of semiconductors: high- temperature regime and the role of superexchange"
Phys. Rev. B 33, 3407 (1986).

60.           A. Lewicki,J. Spałek, J. K. Furdyna, and R. R. Gałązka,
"Superexchange in semimagnetic semiconductors",
J. Magn. Magn. Mat. 54-57, 1221 (1986).

61.           M. Acquarone, J. Spałek, and D. K. Ray,
"Itinerant electrons metamagnetism in two band systems",
ibid., p. 985.

62.           J. Spałek, J. M. Honig, M. Acquarone, and A. Datta,
"Thermodynamic theory of metal-insulator transition",
ibid., p. 1047.

63.           A. Golnik and J. Spałek,
"Effect of fluctuating spins on electron states: Bound and free magnetic polarons",
ibid., p. 1207.

64.           T. Dietl, J. Spałek, and L. Świerkowski,
"The theory of bound magnetic polaron: A physical discussion and a comment",
Phys. Rev. B 33, 7303 (1986).

65.           J. Spałek, A. Datta, and J. M. Honig,
"Thermodynamics of the metal-insulator transition: Discontinuous transition in the paramagnetic phase",
Phys. Rev. B 33, 4891 (1986).

66.           J. M. Honig and J. Spałek,
"Metal-insulator transitions in V₂O₃ alloy system: Experiment and theory",
Adv. Sol. State Chemistry, edited by C. N. R. Rao (Indian National Science Academy, New Delhi, 1986), pp. 232 - 264.

67.           M. Acquarone, J. Spałek, and D. K. Ray,
"Mixed-valence effects and metamagnetism in a two-band model of correlated electrons",
J. Magn. Magn. Mat. 58, 145 (1986).

68.           J. Spałek and W. Wójcik,
"Narrow-band limit of the periodic Anderson model",
Solid State Commun. 60, 119 (1986).

69.           A. Lewicki, J. Spałek, and A. Mycielski,
"Magnetic susceptibility and specific heat of semiconductors Cd_1-xFe_xSe, Hg_1-xFe_xSe and their mixtures",
J. Phys. C 20, 2005 (1987).

70.           J. Spałek and J. Kossut,
"Bound magnetic polaron in diluted magnetic semiconductors: Analytic results",
Solid State Commun. 61, 483 (1987).

71.           J. Spałek, A. Datta, and J. M. Honig,
"Discontinuous metal-insulator transitions and Fermi liquid behavior of correlated electrons",
Phys. Rev. Lett. 59, 728 (1987).

72.           A. Lewicki and J. Spałek,
"Properties of spin-glass phase in semimagnetic semiconductors determined from the susceptibility measurements",
Acta Phys. Polonica A 71, 157 (1987).

73.           J. Spałek and W. Wójcik,
"Statistical thermodynamics of strongly correlated electrons in a narrow band: Fermi liquid versus spin liquid",
Phys. Rev. B 37, 1532 (1988).

74.           J. Spałek,
"Effect of pair hopping and magnitude of intraatomic Coulomb interaction on exchange mediated superconductivity",
Phys. Rev. B 37, 533 (1988).

75.           J. Spałek,
"Exchange-mediated pairing in correlated systems",
Proc. Int. Conf. on High-T_C superconductivity and Materials and Mechanisms of Superconductivity, Interlaken-1988,
Physica C 153-155, 1267 (1988).

76.           A. Lewicki, J. Spałek, J. K. Furdyna, and R. R. Gałązka,
"Magnetic susceptibilty of diluted magnetic (semimagnetic) semiconductors: Further evidence for superexchange",
Phys. Rev. B 37, 1860 (1988).

77.           J. K. Furdyna, N. Samarth, R. B. Frankel, and J. Spałek,
"Static magnetic susceptibility of Zn_1-xMn_xSe",
Phys. Rev. B 37, 3707 (1988).

78.           J. Spałek,
"Microscopic model of hybrid pairing: A common approach to heavy-fermion and high-T_C superconductivity",
Phys. Rev. B 38, 208 (1988).

79.           J. Spałek,
"The Resonating Hybrid Bonds & Superconducting Pairing in Metallic Oxides & Heavy-Fermion Systems",
J. Sol. St. Chem. 76, 224 (1988).

80.           J. Spałek, M. Kokowski, and J. M. Honig,
"Low-Temperature Properties of an Almost Localized Fermi Liquid",
Phys. Rev. B 39, 4175-85 (1989).

81.           J. M. Honig and J. Spałek,
"Relation of the Verwey transition in magnetite to an order-disorder transition of strongly correlated electrons",
J. Less Common Metals 156, 423-38 (1989).

82.           J. Spałek, Z. Kąkol, and J. M. Honig,
"Onset of Superconductivity, Antiferromagnetism, and Exchange - Mediated Pairing in
La_2-xSr_xNiO₄",
Solid State Commun. 71, 511-4 (1989).

83.           J. Spałek,
"Statistical Properties of the Spin Liquid: Interpretation of the Hole States and the Exchange-Mediated pairing",
Phys. Rev. B 40, 5180-3 (1989).

84.           J. Spałek and P. Gopalan,
"Exchange-Mediated Pairing: Gap Anisotropy and a Narrow-Band Limit for Hybridized Electrons",
Contribution to a Festschrift on the occasion of Professor Jacques Friedel (Universitè Paris-Sud) retirement,
published in Journal de Physiques 50, 2869-93 (1989).

85.           Z. Kąkol, J. Spałek, and J. M. Honig,
"Onset of Superconductivity in Antiferromagnetic La₂NiO₄",
Solid State Commun. 71, 283-6 (1989).

86.           J. Spałek, Z. Kąkol, and J. M. Honig,
"Antiferromagnetism and Onset of Superconductivity in Lanthanum Nickelates",
Mat. Res. Symposium, San Diego - 1989 (invited paper); published in Mat. Res. Soc. Conf. Proc. (1989), vol. 155.

87.           Z. Kąkol, J. Spałek, and J. M. Honig,
"Superconductivity and Antiferromagnetism in La₂NiO₄",
J. Solid State Chem. 79, 288-92 (1989).

88.           J. Spałek, M. Kokowski, A. Datta, J. M. Honig,
"Low-Temperature Properties of an almost Localized Fermi Liquid",
Solid State Communications, 70, 911-914 (1989).

89.           J. Spałek,
"Superconductivity Mechanisms",
Review article for: Encyclopedia of Physical Science and Technology, 1990 Yearbook; Academic Press, San Diego, 1990, pp. 117-155. Reprinted in Encyclopedia of Modern Physics, edited by R. A. Meyers, Academic Press, San Diego 1990, pp. 679-716.

90.           G. H. Lander, P. J. Brown, J. Spałek, and J. M. Honig,
"Structural and Magnetization Density Studies of La₂NiO₄",
Phys. Rev. B 40, 4463-71 (1989).

91.           J. F. Mac Kay, W. M. Becker, J. Spałek, and U. Dębska,
"Temperature and Magnetic Field Dependence of the MN⁺² 4⁴G₁(⁴G) ® ⁶A₁ (⁶S) Photoluminescence Band in Zn_0.5Mn_0.5Se",
Phys. Rev. B 42, 1743-9 (1990).

92.           K. A. Nanjundaswamy, A. Lewicki, Z. Kąkol, P. Gopalan, P. Metcalf, J. M. Honig, C. N. R. Rao, and J. Spałek,
"Magnetic Properties of Pure Sr and Ca Doped La₂NiO_4+d Ceramics: Onset of High-T_C Superconductivity",
Physica C 166, 361-71 (1990).

93.           J. Spałek and P. Gopalan,
"Exchange-Mediated Pairing Among Correlated Electrons: Fluctuating Valence Limit",
Physica B 163, 151-4 (1990).

94.           J. Spałek,
"Statistical Properties of Strongly Correlated Electrons: Fermi Liquid versus Spin Liquid",
Physica B 163, 621-4 (1990).

95.           J. Spałek and P. Gopalan,
"Almost-Localized Electrons in a Magnetic Field",
Phys. Rev. Letters 64, 2823-26 (1990).

96.           X. X. Bi, P. C. Eklund, E. Mc Rae, J. G. Zhang, P. Metcalf, J. Spałek, and J. M. Honig,
"Optical conductivity of single crystals of La_2-xSr_xNiO₄",
Phys. Rev. B 42, 4756-60 (1990).

97.           J. Spałek,
"Fermi-Liquid Behavior and the Metal-Insulator Transition of Almost Localized Electrons: A Brief Theoretical  Review and an Application to V₂O₃ system",
Transition-Metal Compounds, edited by J. Spałek and C. N. R. Rao,
published in Journal of Solid State Chemistry 88, 70-93 (1990).

98.           J. Spałek and J. M. Honig,
"Metal-Insulator Transitions, Exchange Interactions, and Real Space Pairing",
published in Studies of High Temperature Superconductors, edited by A. Narlikar, Nova Science Publishers, New York, vol. 8, 1991, pp. 1-67.

99.           S. A. Carter, J. Yang, T. F. Rosenbaum, J. Spałek, and J. M. Honig,
"The Effect of Correlations on Electron States in the Mott-Hubbard Insulator V₂O₃",
Phys. Rev. B 43, 607-14 (1991).

100.       R. R. Gałązka, J. Spałek, A. Lewicki, B. C. Crooker, G. Karczewski, and T. Story,
"Ferromagnetic properties of the degenerate semiconductor Pb_0.20Sn_0.72Mn_0.08Te",
Phys. Rev. B 43, 11093-99 (1991).

101.       J. P. Shepherd, J. W. Koenitzer, R. Aragon, J. Spałek, and J. M. Honig,
"Heat capacity and entropy of nonstoichiometric magnetite Fe_3(1-d)O₄: The thermodynamic nature of the Verwey transition",
Phys. Rev. B 43, 8461-71 (1991).  

102.       G. H. Lander, P. J. Brown, C. Stassis, P. Gopalan, J. Spałek, and J. M. Honig,
"Magnetic and structural study of La_1.8Sr_0.2NiO₄",
Phys. Rev. B 43, 448-456 (1991).

103.       S. A. Carter, T. F. Rosenbaum, J. M. Honig, and J. Spałek,
"New Phase Boundary in Highly Correlated, Barely Metallic V₂O₃",
Phys. Rev. Lett. 67, 3440-3 (1991).

104.       A. Datta, J. M. Honig, and J. Spałek,
"Discontinuous metal-insulator transitions of correlated electrons at nonzero temperature: effect of shape of density of states",
Phys. Rev. B 44, 8459-65 (1991).

105.       K. Byczuk, J. Spałek, and W. Wójcik
"Microscopic Model of Hybrid Pairing: II. Exact Solution for a Single Pair",
Phys. Rev. B 46, 14134-41 (1992).

106.       K. Sreedhar, J. M. Honig, M. Darwin, M. McElfresh, P. M. Shand, J. Xu, B. C. Crooker, and J. Spałek,
"Electronic Properties of the Metallic Perovskite LaNiO₃: Correlated Behavior of 3d Electrons",
Phys. Rev. B 46, 6382-86 (1992).

107.       J. Spałek and W. Wójcik,
"Microscopic Model of the Mott-Hubbard Localization",
Phys. Rev. B 45, 3799-3802 (1992).

108.       J. Spałek and W. Wójcik,
"Microscopic Approach to the Mott-Hubbard Localization",
J. Mag. Mag. Mat. 104-107, 723-24 (1992).

109.       J. Spałek,
"Physik in Polen: Herausforderung und Chance",
Phys. Blätter, June (1993) pp. 624-7.

110.       W. Bao, C. Broholm, S.A. Carter, T. F. Rosenbaum, G. Aeppli, S. F. Trevino, P. Metcalf, J. Honig, and J. Spałek,
"Incommensurate Spin Density Wave i Metallic V_2-yO₃",
Phys. Rev. Lett 71, 766-69 (1993).

111.       J. Spałek, K. Byczuk, J. Karbowski, and W. Wójcik,
"Strongly Correlated Fermions at Low Temperatures",
Physica Scripta T49, 206-14 (1993).

112.       S. A. Carter, T. F. Rosenbaum, P. Metcalf, J. Honig, and J. Spałek,
"Mass Enhancement and Magnetic Order at the Mott Hubbard Transition",
Phys. Rev. B (Rapid Comm.) 44, 16841-44 (1993).

113.       J. Karbowski and J. Spałek,
"Interorbital Pairing for Heavy Fermions and Universal Scaling of their Basic Characteristics",
Phys. Rev. B 49, 1454-57 (1994).

114.       J. Spałek,
"Exchange Interaction as a Source of Real Space Pairing in High Temperature Superconductors and Heavy Fermions: A Brief Overview",
Acta Phys. Polon. A85, 39-52 (1994).

115.       K. Byczuk and J. Spałek,
"Application of Statistical Spin Liquid Concept to High-Temperature Superconductivity",
Acta Phys. Polon. A85, 337-40 (1994).

116.       J. Karbowski and J. Spałek,
"Universal Scaling of Basic Properties of the Heavy-Fermion Superconductors",
Acta Phys. Polon. A85, 341-45 (1994).

117.       J. Spałek and W. Wójcik,
"Strongly Correlated Electrons in a Magnetic Field: Fermi Liquid Versus Spin Liquid",
Acta Phys. Polon. A85, 357-61 (1994).

118.       S. A. Carter, T. F. Rosenbaum, M. Lu, H. M. Jaeger, P. Metcalf, J. M. Honig, and J. Spałek,
"Magnetic and Transport Studies of Pure V₂O₃ under Pressure",
Phys. Rev. B 49, 7898-7903 (1994).

119.       K. Byczuk, J.Karbowski, J. Spałek, and W. Wójcik,
"Electronic Structure and pairing of Strongly Correlated Fermions: Fermi Liquid Versus Spin Liquid",
Proc. Int. Conf. ``Strongly Correlated Systems and Superconductivity'', published by World Scientific, Singapore, 1994, pp. 159-84.

120.       K. Byczuk, and J. Spałek,
"Statistical Properties and Statistical Interaction for Particles with Spin: The Hubbard Model in One Dimension and a Statistical Spin Liquid",
Phys. Rev. B 50, 11403-08 (1994).

121.       J. Spałek and W. Wójcik,
"Almost Localized Fermions and Mott-Hubbard Transitions at Nonzero Temperatures",
The Proceedings of the XVII-th Taniguchi Symposium: ``Spectroscopy of the Mott Insulators and Correlated Metals''; a chapter in volume published by Springer Series in Solid State Sciences,
vol. 119, pp. 41 - 65 (1995).

122.       K. Byczuk, J. Spałek, and W. Wójcik,
"Electronic Structure and Real Space Pairing for Statistical Spin Liquid in Two Dimensions",
Physica C 235-240, 2347-48 (1994).

123.       J. Spałek and W. Wójcik,
"Magnetic Properties of Almost Localized Fermions",
J. Mag. Mag. Mat. 140-144, 1199-2000 (1995).

124.       J. Karbowski and J. Spałek,
"Superconducting Instabilities in the Finite U Anderson Lattice Model",
Physica B 206-207, 716-18 (1995).

125.       K. Byczuk and J. Spałek,
"Universality Classes, Statistical Exclusion Principles and Properties of Interacting Fermions",
Phys. Rev. B 51, (RC) 7934-37 (1995).

126.       P. Korbel, J. Spałek, W. Wójcik, and M. Acquarone,
"Spin-Split Masses and Metamagnetic Behavior of Almost-Localized Fermions",
Phys. Rev. B 52, (RC) R2213-16 (1995).

127.       J. Spałek, K. Byczuk, and W. Wójcik,
"Electron States, Real Space Pairing and Cooper-Pair Tunneling Between the Superconducting Planes",
Molecular Phys. Rep. 12, 219-41 (1995).

128.       K. Byczuk, J. Spałek, G.S. Joyce, and S. Sarkar,
"What is Between Fermi-Dirac and Bose-Einstein Statistics?",
Acta Phys. Polon. B 26, 2167-84 (1995).

129.       K. Byczuk and J. Spałek,
"Spin-Charge Separated Luttinger Liquid in Arbitrary Spatial Dimensions",
Solid State Commun., 99, 99-104 (1996).

130.       G. S. Joyce, S. Sarkar, J. Spałek, and K. Byczuk,
"Thermodynamic Properties of Particles with Intermediate Statistics",
Phys. Rev. B 53 (BR), 990-3 (1996).

131.       K. Byczuk and J. Spałek,
"Transition Temperature and a Spatial Dependence of the Superconducting Gap for Multilayer High-Temperature Superconductors",
Phys. Rev. B 53 (RC), R518-21 (1996).

132.       J. Spałek and K. Byczuk,
"Universal Properties of Multilayer High-Temperature Superconductors: Transition Temperature and a Spatial Modulation of the Gap",
in: Lecture Notes in Physics, Springer Verlag, Berlin, 1996, pp.285-301.

133.       K. Byczuk, J. Spałek, and J. M. Honig,
"Intermediate Statistics of Interacting Electrons: A Bond Approach",
Solid State Commun. 98, 367-71 (1996).

134.       X. Yao, J.M. Honig, T. Hogan, C. Kannerwurf, and J. Spałek,
"Electrical Properties of NiS_2-xSe_x Single Crystals: From Mott Insulator to Paramagnetic Metal",
Phys. Rev. B 54, 17469-75 (1996).

135.       K. Byczuk and J. Spałek,
"Luttinger Liquid as a New Metallic State of Correlated Fermions",
Acta Phys. Polon. A 90, 595-602 (1996).

136.       J. Spałek, P. Korbel, and W. Wójcik,
"Almost Localized Fermions in a Magnetic Field: Properties at the Metamagnetic Transition",
Phys. Rev. B 56, 971-974 (1997).

137.       J. Spałek, W. Wójcik, and P. Korbel,
"Correlated Fermions Close to the Mott Localization: Deviations from the Landau Fermi-Liquid Picture",
Acta Phys. Polon. A 92, 277-280 (1997).

138.       J. Spałek, W. Wójcik, and P. Korbel,
"Almost Localized Fermions in a Magnetic Field: Deviation from the Landau Picture and a Transition to non-Fermi Liquid",
Proc. Int. Conf. on Strongly Correlated Systems, Zürich-1996.
Physica B 230-232, 620-623 (1997).

139.       R. Citro and J. Spałek,
"Effective Interaction Among Heavy Quasiparticles: Hamiltonian Approach in the Kondo Lattice Limit",
Proc. Int. Conf. on Strongly Correlated Systems SCES'96, Zürich, 1996,
Physica B 230-232, 469-471 (1997).

140.       P. Korbel, J. Spałek, and W. Wójcik,
"Non-Fermi Liquid Behavior of Correlated Fermions in an Applied Field",
Proc. Euroconference Physics of Magnetism, Poznań, 1996;
Acta Phys. Polon. A 92, 323-326 (1997).

141.       J. Spałek, W. Wójcik, and P. Korbel,
"Almost Localized Fermions in a Magnetic Field: A Mean-Field Picture and its Relevance to Experiment",
Presented at XX International School of Theoretical Physics Electron Processes in Strongly Correlated Systems, Ustroń, Poland, September 9 - 14, 1996;
Molecular Phys. Rep. 17, 199-213 (1997).

142.       J. Spałek and R. Citro,
"Kondo Lattice State Within the Slave Boson Approach: Spin-Split Masses and Effective Interaction Among Heavy Quasiparticle",
Z. Phys. B 103, 267-270 (1997).

143.       R. Doradziński and J. Spałek,
"Antiferromagnetic Heavy-Fermion and Kondo-Insulating States with Compensated Magnetic Moments",
Phys. Rev. B 56, R14239-242 (1997).

144.       A. Klejnberg and J. Spałek,
"A Simple treatment of Metal-Insulator Transition: Effects of Degeneracy, Temperature and Applied Magnetic Field",
Phys. Rev. B 57, 12041-55 (1998).

145.       R. Doradziński and J. Spałek,
"Mean-Field Magnetic Phase Diagram of the Periodic Anderson Model with the Kondo Compensated Phases",
Phys. Rev. B 58, 3293-3301 (1998).

146.       K. Byczuk, J. Spałek, W. Wójcik,
"Luttinger-Liquid Phenomenology for High-T_C Superconductors",
Acta Phys. Polonica B29, 3871-84 (1998).

147.       K. Byczuk, J. Spałek, W. Wójcik,
"Spectral Properties of Luttinger Liquid and Comparison with Fermi Liquid",
Mol. Phys. Rep. 20, 39-50 (1997).

148.       J. Spałek and R. Doradziński,
"Magnetism with Compensated Moments in the Kondo-Lattice Systems: A Brief Overview",
w "Magnetism and Electronic Correlation in Local-Moment Systems",
ed. M. Donath et al. (World Scientific, Singapore, 1998), strony 387-405.

149.       R. Doradziński and J. Spałek,
"Metallic and Insulating Kondo-lattice States with Compensated Moments",
Physica B 259 - 261, 213-4 (1999).

150.       J. M. Honig and J. Spałek,
"Electronic Properties of NiS_2-xSe_x Single Crystals: From Magnetic Mott-Hubbard Insulators to Normal Metals",
chapter in a book: "Frontiers in Materials Chemistry", Academic Press,
Chem. Mater. 10, 2910-29 (1998).

151.       A. Klejnberg and J. Spałek,
"Hund's Rule Coupling as the Source of Spin-Triplet Pairing in Correlated and Degenerate Band Systems",
J. Phys.: Condensed Matter, 11, 6553-60 (1999).

152.       R. Citro, A. Romano, and J. Spałek,
"Kondo-Lattice in an Applied Magnetic Field: Spin-Split Masses and Metamagnetism",
Physica B 25-261, 213-4 (1999).

153.       J. Spałek and  R. Doradziński,
"Kondo-Lattice Metals and Semiconductors with Compensated Magnetic Moments: A Brief Overview",
Acta Physica Polonica A 96, 677-88 (1999).

154.       J. Spałek,
"Kondo-lattice metallic and semiconducting states and their instabilities",
Acta Phys. Polon. A97, 71 - 79 (2000).

155.       J. Spałek, R. Podsiadły, A. Rycerz, W. Wójcik,
"Exact diagonalization of many-fermion Hamiltonian combined with wave-function readjustment: Application to one-dimensional systems",
Acta Phys. Polon. B31, 2879 – 98 (2000).

156.       J. Spałek, R. Podsiadły, W. Wójcik,
"Correlation induced optimization of wave functions: The Hubbard chain",
Acta Phys. Polon. A97, 381 – 84 (2000).

157.       J. Spałek,
"Correlated fermions: a new paradigm in physics on the example of solid state physics",
Eur. J. Phys. 21, 511 - 34 (2000).

158.       J. Spałek, R. Podsiadły, W. Wójcik, A. Rycerz,
"Optimization of single-particle basis for exactly soluble models of correlated electrons",
Phys. Rev. B61, 15676 – 87 (2000).

159.       A. Klejnberg, J. Spałek,
"Metal-insulator transition, gap opening due to the combined orbital-spin ordering and spin-triplet pairing",
Phys. Rev. B61, 15542 - 45 (2000).

160.       J. Spałek, A. Rycerz, W. Wójcik, and R. Podsiadły,
"Lattice fermions with optimized wave functions: Exact results",
in: Open Problems in Strongly Correlated Electron Systems,
edited by J. Bonča, P. Prelovšek, A. Ramšak, and S. Sarkar
(Kluwer Acedemic Publishers, Dortdrecht, 2001), pp. 443 - 45.

161.       J. Spałek,
"Spin-triplet superconducting pairing due to local Hund's rule and Dirac exchange",
Phys. Rev. B63, 104513, 1-9 (2001).

162.       A. Rycerz, J. Spałek,
"Exact diagonalization of many-fermion Hamiltonian with wave-function renormalization",
Phys. Rev. B63, 073101, 1-4 (2001).

163.       J. Spałek,
"Triplet pairing via local exchange in correlated systems",
in: Open Problems in Strongly Correlated Electron Systems,
edited by J. Bonča, P. Prelovšek, A. Ramšak, and S. Sarkar
(Kluwer Academic, Dordrecht, 2001), pp. 253-259.

164.       J. Spałek, A. Rycerz,
"Electron localization in a one-dimensional nanoscopic system: A combined exact diagonalization – ab initio approach",
Phys. Rev. B64, 161105(R), 1-4 (2001).

165.       J. Spałek, A. Rycerz, W. Wójcik,
"Exact diagonalization of many-fermion Hamiltonian combined with wave-function readjustment.
II. Metallicity and electronic localization in nanoscopic systems",
Acta Phys. Polon. B32, 3189 - 3202 (2001).

166.       J.M. Honig, J. Spałek,
"Metal-insulator phase transitions and related critical phenomena in NiS_2-xSe_x",
Current Opinions in Solid State and Materials Science 5 (2001) pp.269 - 79.

167.       J. Spałek, P. Wróbel, and W. Wójcik,
"Coexistence of spin-triplet superconductivity and ferromagnetism induced by the Hund's rule exchange",
Proceedings of the Conference "Ruthenate and rutheno-cuprate materials", in: Springer Series: Lecture Notes in Physics, Berlin 2002, vol. 603, pp. 61 - 75.

168.       A. Rycerz, J. Spałek,
"Electronic states, Mott localization, electron-lattice coupling, and dimerization for correlated one-dimensional systems",
Phys. Rev. B65, 035110 (2002).

169.       J. Spałek, A. Rycerz, R. Podsiadły,
"Electron localization from the combined exact diagonalization – ab initio approach",
Physica B 312-313 542-544 (2002).

170.       A. Rycerz, J. Spałek, R. Podsiadły,
"Electron localization from the combined exact diagonalization – ab initio approach in one dimension",
Physica B 318 338-340 (2002).

171.       A. Rycerz, J. Spałek, R. Podsiadły, and W. Wójcik,
"A combined exact diagonalization – ab initio study of the metallicity and electron localization in nanoscopic systems",
in: Lectures on the Physics of Highly Correlated Electron Systems VI: Sixth Training Course, ed. by F. Mancini, American Institute of Physics, pp. 212-222, 2002.

172.       A. Rycerz, J. Spałek,
"Electronic states, Mott localization, electron lattice coupling, and dimerization for correlated one-dimensional systems",
Phys. Rev. B65, 035110, 1-15 (2002).

173.       J. Spałek,
"Superconductivity Mechanisms",
Encyclopedia of Physical Science and Technology, vol. 16, pp. 235-274,
2^nd revised edition , Academic Press, San Diego, 2002.

174.       J. Spałek, E. M. Görlich, A. Rycerz, R. Zahorbeński, R. Podsiadły,
"Properties of correlated nanoscopic systems from the combined exact diagonalization – ab initio method",
in Concepts in Electron Correlation, ed. A.C. Hewson, V. Zlatic, Kluwer Academic Publisher, Dordrecht 2003, pp. 257 - 268.

175.       A. Rycerz, J. Spałek, R. Podsiadły,
"Defining metallicity and Mott localization in correlated nanoscopic systems",
Acta Phys. Polon. B34, 651 – 54 (2003).

176.       J. Spałek, W. Wójcik,
"A strong effect of disorder on Mott Transition: Hubbard-Lloyd model",
Acta Phys. Polon. B34, 651 – 54 (2003).

177.       A. Rycerz, J. Spałek,
"On metal-insulator transition for a one-dimensional correlated nanoscopic chain",
Acta Phys. Polon. B34, 655 – 58 (2003).

178.       P. Wróbel, J. Spałek, W. Wójcik,
"Coexistence of the spin-triplet superconductivity with an itinerant ferromagnetism induced by the Hund's rule exchange"
Acta Phys. Polon. B34, 527 – 31 (2003).

179.       E. M. Görlich, R. Zahorbeński, J. Spałek,
"Correlated states for atoms and atomic clusters: A combined exact diagonalization – ab initio approach",
Acta Phys. Polon. B34, 645 – 49 (2003).

180.       P. Korbel, W. Wójcik, A. Klejnberg, J. Spałek, M. Acquarone, and M. Lavagna,
"Antiferromagnetism of almost localized fermions: Evolution from  Slater-type to Mott-Hubbard gap",
Eur. Phys. J. B, 32, 315-322, (2003).

181.       J. Spałek, P.Wróbel, W. Wójcik,
"Spin-triplet superconductivity induced by the Hund's rule coupling at the border of ferromagnetism",
Physica C, 387, 1-6 (2003).

182.       A. Rycerz, J. Spałek,
"Microwave absorption by the Josephson network in a low field: Application to ceramic high temperature superconductors",
Physica C, 387, 97-101 (2003).

183.       J. Spałek, A. Rycerz, E. M. Görlich, R. Zahorbeński,
"Electron correlations at nanoscale",
in: Highlights in Condensed Matter Physics, ed. by A. Avella et al., American Institute of Physics, Melville, New York 2003, pp. 291-303, 2003.

184.       A. Rycerz and J. Spałek,
"Properties of a correlated nanoscopic chain close to the metal-insulator transition",
in: Lectures on the Physics of Highly Correlated Electron Systems VII: Seventh Training Course in the Physics of Correlated Electron Systems and High-T_C Superconductors, ed. by A. Avella and F. Mancini, American Institute of Physics,
pp. 313-322, 2003.

185.       E. M. Görlich, J. Kurzyk, A. Rycerz, R. Zahorbeński, R. Podsiadły, W. Wójcik, and J. Spałek,
"Electronic states and localization in nanoscopic chains and rings from first principles: EDABI method",
in Molecular Nanowires and Other Quantum Objects, NATO ARW, Bled 2003, ed. A. S. Alexandrov et al., Kluwer Academic Publisher, Dordrecht 2004, pp. 355-375.

186.       Z. Usatenko and J. Spałek,
"Surface critical behavior of semi-infinite systems with cubic anisotropy at the ordinary transition"
J. Phys. A: Math. Gen., 37 (2004), 7113-7125.

187.       A. Rycerz and J. Spałek,
"Fundamental properties, localization threshold, and the Tomonaga-Luttinger behavior of electrons in nanochains",
Eur. Phys. J. B 40, 153-165 (2004).

188.       K. Byczuk, C. Janowitz, R. Manzke, J. Spałek, and W. Wójcik,
"Luttinger liquid phenomenology and angle resolved photoemission for single layer
Bi₂Sr_2-xLa_xCuO_6+d high-temperature superconductor"
Europhys. Lett., 67 (6), pp. 1011-1017 (2004).

189.       A. Ślebarski, T. Zawada, J. Spałek, and A. Jezierski,
"Effect of Sn doping on the coherent Kondo gap in CeRhSb and the emergence of a non-Fermi liquid state in CeRhSb_1-xSn_x",
Phys. Rev. B 70, 235112, 1-9 (2004).

190.       A. Rycerz and J. Spałek,
"Physical properties of correlated electrons in nanochains from EDABI method",
in: Lectures on the Physics of Highly Correlated Electron Systems VIII: Eight Training Course in the Physics of Correlated Electron Systems and High-T_C Superconductors, ed. by A. Avella and F. Mancini, American Institute of Physics, New York, vol. 715, 235-244 (2004).

191.       E. M. Görlich, A. Rycerz, and J. Spałek,
"Electronic properties of correlated nanoscopic systems from the exact diagonalization combined with an ab initio approach",
phys. stat. sol. (b) 242, 234-244 (2005).

192.       A. Ślebarski, T. Zawada, and J. Spałek,
"Coherent Kondo insulating and non-Fermi liquid ground states in CeRhSb_1-xSn_x"
Physica B 359-361, 118-120 (2005).

193.       A. Rycerz and J. Spałek,
"Fundamental properties of correlated electrons in nanochains",
Physica B 359-361, 1448-1450 (2005).

194.       J. Spałek,
"Electronic structure: Fermi liquid theory"
Encyclopedia of Condensed Matter Physics,
edited by Franco Bassani et al. (Elsevier, Amsterdam, 2005), vol. 2, 126-136.

195.       J. Spałek, A. Ślebarski, J. Goraus, L. Spałek, K. Tomala, A. Zarzycki, and A. Hackemer
"From Kondo semiconductor to a singular non-Fermi liquid via a quantum critical point: The case of CeRhSb_1-xSn_x,"
Phys. Rev. B 72, 155112, 1-12 (2005).

196.       A. Ślebarski and J. Spałek,
"Universal scaling and a novel quantum critical behavior of CeRhSb_1-xSn_x"
Phys. Rev. Lett. 95, 046402, 1-4 (2005).

197.       J. Spałek,
"From atoms to nanoworld", in: Wissenschaft und Kunst für Europa,
Dokumetation des 6. Internationalen Kongresses der Societas Humboldtiana Polonorum,
Kraków - 2005, pp. 193 - 202.

198.       J. Spałek,
"Magnetic properties of almost localized fermions revisited: spin dependent masses and quantum critical behavior",
phys. stat. sol. (b) 243, 78-88 (2006) – Editor's choice.

199.       A. Rycerz, J. Spałek,
"Electronic structure and parity effects in correlated nanosystems",
phys. stat. sol. (b) 243, 1-5 (2006).

200.       J. Spałek,
"Spin-split masses and quantum critical behavior of almost localized narrow-band and heavy-fermion systems",
Physica B 378-380, 654 (2006).

201.       E. M. Görlich, J. Spałek,
"Crystal-field levels from the combined exact diagonalization ab-initio method (EDABI) for correlated electrons",
Physica B 378-380, 1075 (2006).

202.       A. Ślebarski, J. Spałek,
"Quantum critical behavior at the Kondo insulator-non-Fermi liquid boundary for
CeRhSb_1-xSn_x",
Physica B 378-380, 152 (2006).

203.       A. Rycerz, J. Spałek,
"Conductance of a double quantum dot with correlation-induced wave function renormalization",
Physica B 378-380, 935 (2006).

204.       A. Ślebarski, J. Spałek, M. Gamża, and A. Hackemer,
"Nonuniversality of the non-Fermi liquid state in CeRhSb_1-xSn_x compounds on the Sn-rich side",
Phys. Rev. B 73, 205115 (2006).

205.       P. Wróbel, Z. Starypan, J. Kaczmarczyk, and J. Spałek,
"Cooper pair in two nonstandard situations",
Acta Phys. Polon. A 109, 541 (2006).

206.       J. Spałek, E. M. Görlich, A. Rycerz, R. Zahorbeński,
 "The combined exact diagonalization - ab initio approach and its applicationto correlated electronic states and Mott-Hubbard localization in nanoscopic systems",
J. Phys.: Condens. Matter., 19, 255212 (2007); cond-mat/0610815.

207.   J. Spałek,
 "t-J model then and now: a personal perspective from the pioneering times",
Acta Phys. Polon. A 111, 409-24 (2007).

208.   A. Ślebarski, J. Spałek,
 "Kondo insulating state in Ce Rh Sb Sn as a function of carrier number and its subsequent metallization",
Acta Phys. Polon. A 111, 487-96 (2007).

209.   A. Rycerz, J. Spałek,
 "Josephson network as a model for inhomogeneous superconductor: a microwave power absorption",
Acta Phys. Polon. A 111, 581-594 (2007).

210.   J. Kaczmarczyk, J. Spałek,
 "Cooper pair with nonzero momentum in system with spin dependent mass of quasiparticles",
Acta Phys. Polon. A 111, 595-602 (2007).

211.   J. Kurzyk, J. Spałek, W. Wójcik,
 "Lieb-Wu solution, Gutzwiller-wave-function, and Gutzwiller-ansatz approximation with adjustable single-particle
  wave function for the Hubbard chain",
Acta Phys. Polon. A 111, 603-18 (2007).

212.   J. Jędrak, J. Spałek, and G. Zwicknagl,
"Partial localization of correlated electrons in an orbitally degenerate narrow band:
 spin dependent masses, saturated ferromagnetism, and the effective s-d model",
 Acta Phys. Polon. A 111, 619-34 (2007).

213.       A. Ślebarski and J. Spałek,
"Systematic of strongly correlated ternary 4f compounds on the plane hybridization - f-level occupancy",
J. Magn. Magn. Materials 310, 85-6 (2007).

214.       J. Jędrak, J. Spałek, and G. Zwicknagl,
"Partial localization of correlated electrons: spin dependent masses, saturated ferromagnetism",
phys. stat. sol. (b) 244, 2362-70 (2007).

215.  A. Ślebarski, J. Spałek,
 "Phase diagram of CeRhSb_1-xSn_x in full concentration range",
J. Magn. Magn. Materials 310, 209-11 (2007).

216. J. Spałek,
 "Effective t-J model of pairing singlet versus triplet",
Condensed Matter Physics 11, 455-62 (2008).

217. J. Spałek, A. Kozłowski. Z. Tarnawski, Z. Kąkol, Y. Fukami, F. Ono, R. Zach. L. J. Spałek, and J. M. Honig,
 "Verwey transition in Fe₃O₄ at high pressure: Quantum critical point at the onset of metallization"
Phys. Rev. B 78, 100401(R), str. 1-4 (2008).

218. J. Spałek and A. Ślebarski,
 "Stabilization of Kondo semiconductor state by doping of CeNi_1-dSn_1+d-xSb_x and the general criterion of its appearance",
Acta Phys. Polon. A 114, str. 7-14 (2008).

219. J. Kurzyk, W. Wójcik, J. Spałek,
 "Extended Hubbard model with renormalized Wannier wave functions in the correlated state: beyond the parametrized models",
Eur. Phys. J. B 66, No. 3, str. 385-398 (2008).

220. A. Ślebarski and J. Spałek,
 "From Kondo semimetal to spin-glass behaviour in doped CeNi_1-dSn_1+d-xSb_x system",
Philosophical Magazine,  89, 1845-59 (2009).

221. J. Kaczmarczyk and J. Spałek,
 "Superconductivity in an almost localized Fermi liquid of quasiparticles with spin-dependent masses and effective-field induced by electron correlations",
Phys. Rev. B 79, 214519/1-15 (2009).

222. J. Kurzyk, W. Wójcik, and J. Spałek,
 "Optimized Wannier functions for Hubbard chain",
Acta Physica Polonica A 115, 7-9 (2009).

223. J. Spałek, A. Kozłowski. Z. Tarnawski, Z. Kąkol, Y. Fukami, F. Ono, R. Zach. L. J. Spałek, and J. M. Honig,
 "Verwey transition in magnetite at high pressure: A new quantum critical point at the onset of metallization",
Physica B (2009).

2. EDYTOR MATERIAŁÓW KONFERENCYJNYCH

1.      J. Spałek (co-editor)
Transition-Metal Compounds, edited by J. Spałek and C. N. R. Rao,
Special volume of the Journal of Solid State Chemistry 88, (1990).

2.      J. Spałek (edytor)
Proceedings of the XXXVIII Cracow School of Theoretical Physics,1-10 czerwca
1998 (opublikowane jako Nr 12, tom 29 Acta Physica Polonica B).

3.      J. Spałek (edytor)
Proceedings of the XL Cracow School of Theoretical Physics, 3-11 czerwca 2000
(opublikowane jako Nr 12, tom 31 Acta Physica Polonica B)..

4.      J. Spałek (co-editor)
Proceedings of the International Conference: Strongly Correlated Electron Systems,
Kraków, July 10-13, 2002,
Acta Phys. Polon. B34, Part I and Part II, 2003.

3. INNE ARTYKUŁY

1.      J. Spałek,
"Jednostki mają służyć fizyce",
Postępy Fizyki, 51, zeszyt 5, 272 - 3 (2000).

2.      J. Spałek,
"Świat skorelowanych fermionów: lokalizacja Motta i ciecze kwantowe superciężkich kwazicząstek",
Postępy Fizyki, 51, zeszyt 1, 1 - 15 (2000).

3.      J. Spałek,
"Czy fizyka ma szansę w XXI wieku ?",
Postępy Fizyki, tom 53, zeszyt 1, 19-25, 2002.

4.      J. Spałek,
"Ciecze kwantowe wczoraj i dziś",
Postępy Fizyki, tom dodatkowy 53D, 22-35, 2002.

5.      J. Spałek,
"Od atomu do cieczy kwantowej",
Serwis Informacji Naukowo-Technicznej KBN, zeszyt 4(9), str. 3, 2002.

6.      J. Spałek,
"Nagroda Nobla z fizyki 2003",
Foton 83, 39-41 (Zima 2003).

7.      J. Spałek,
"Na drodze do nanoświata",
Alma Mater, Nr 47, 7-8 (styczeń 2003).

8.      J. Spałek,
"Na kampusie Purdue",
Alma Mater, Nr 48, 26-27 (luty 2003).

9.      J. Spałek,
"Wyzwania przyrodnika"
Alma Mater, Nr 62, 47-48 (lato 2004).

10.  J. Spałek,
" Czy fizyka jest modelową nauką opisu świata ?"
Alma Mater, w druku.

11.  J. Spałek,
"Statystyka Natansona-Bosego-Einsteina ? Krytyczne tak.",
Postępy Fizyki, tom 56, zeszyt 4, 146-153 (2005).

12. J. Spałek,
"Kwantowe przejścia fazowe i zjawiska krytyczne: nowy typ zachowania materii",
Postępy Fizyki, vol. 57, No. 5, 200-210  (2006).

13. J. Spałek,
 "Garść reminiscencji z okresu pionierskiego",
Ze zjazdów i konferencji, Postępy Fizyki, vol. 57, No. 5, 233-234 (2006).

Wypromowani doktorzy

Wypromowałem 15 doktorów: 2 w Akademii Górniczo-Hutniczej w Krakowie, 3 w Uniwersytecie Warszawskim, 7 w Uniwersytecie Jagiellońskim. Obecnie mam 5 doktorantów (jedna praca na ukończeniu w ciągu najbliższych miesięcy). Oprócz tego byłem ko-promotorem 3 rozpraw doktorskich (Ph. D.) zagranicą (2 w Uniwersytecie Purdue (USA) i jednej w Universita di Salerno we Włoszech).

Dr Andrzej Lewicki (1986)

Dr hab. Zbigniew Tarnawski (1986)

Dr Prakash Gopalan (prof., IIT Bombay) (1990)

Dr Anuradha Datta (1991)

Dr hab. Krzysztof Byczuk (1995)

Dr Jan Karbowski (1996)

Dr Roberta Citro (Salerno) (1997)

Dr Paweł Korbel (1997)

Dr Roman Doradziński (1999)

Dr Adam Rycerz (2003)

Dr Edward M. Görlich (2004)

Dr Paweł Wróbel (2004)

Dr Roman Zahorbeński (2004)

Dr Andrzej Klejnberg (2006)

Dr Jan Kurzyk (2007)

Letter to Physics Today

Kraków, January 13, 2006

Dear Editor,

            The World Year of Physics came to an end with a series of articles about the Einstein's Annus Mirabilis 1905. Here I would like to turn the attention of our community to one very important, but ignored aspect of that discussion. Namely, Einstein proposed the concept of light quanta as particles and explained the photoelectric effect. This explanation was not universally accepted at first. Even Lorentz had an alternative explanation. Planck was at times sympathetic and skeptic to the concept of what eventually became a photon. The principle of counting the quanta as particles was attractive (E_n=nhn) from one side. However, Einstein was not able to derive then the Planck distribution, for which the concept of quantum had been introduced in the first place! This has been done only by Ladislas (Władysław) Natanson in 1911 and required introducing an equally novel fundamental concept – the particle indistinguishability [1]. However, his papers are completely forgotten, since they were published in a local journal [2] in Kraków (a part of Austrian-Hungarian Empire then). His concept of particle indistinguishability is crystal clear; in a way, though it is a matter of taste, it is much clearer than its appearance in the well known Bose paper [3]. However, his derivation of the Planck distribution is cumbersome [1,4]. I claim that if Einstein would have been able to derive the Planck distribution, then this would close the discussion about the concept of quanta much earlier.

            The paradox of this affair is that Natanson visited Einstein in Berlin 1914 and probably have not mentioned his own work, as he was a shy person. He became an eminent intellectual after the rebirth of Poland in 1918. He was a Rector Magnificus of the Jagiellonian University (1922-3). He also received a highest literary award for his essays on Shakespeare and the ancient Greek dramas. I should not probably go as far as to propose to rename the Bose-Einstein statistics with adding the Natanson's name, but I thought the readers may be interested in learning about one more forgotten hero behind the main scene.

[1]        The Natanson's discovery of the light-quanta indistinguishability has been acknowledged in the internet History of Statistical Mechanics and Thermodynamics;
cf. http://history.hyperjeff.net/statmech.html

[2]        L. Natanson, "On statistical theory of radiation", Extraits du Bulletin de l'Academie des Sciences de Cracovie, Série A, pp. 134-148 (1911); cf. also German version: Physikalische Zeitschrift 12, 659-666 (1911).

[3]        S. N. Bose, Z. Phys. 26, 178 (1924).

[4]        A good exposition of the concepts is provided in: W. Natanson, Zasady teoryi promieniowania, Wydawnictwo Redakcji Prac Matematyczno-Fizycznych, Warszawa, 1912 (in Polish).

Certyfikat Członka zagranicznego Włoskiej Akademii Nauki i Literatury.

Tekst referatu wygłoszonego na Zjeździe Stypendystów Fundacji Humboldta

Societas Humboldtiana Polonorum, Toruń, 2006

From Information Driven Society to Curiosity Driven Society of EU

Jozef Spałek

Member of the Science Policy Committee, Ministry of Science and Higher Education, Warszawa

Permanent address: Instytut Fizyki im. Mariana Smoluchowskiego, Uniwersytet Jagielloński, ul. Reymonta 4, 30-059 Kraków

In my talk I try to address the question whether our society is transforming from the information-driven to the curiosity-(knowledge) -driven individuals. I claim that only in the second case basic or fundamental research will blossom. I also distinguish between the information consumption and that serving to develop a critical assessment of the world we live in. Only the domination of the latter seems to help creating a stable and affluent European Society of the XXI century.

  1. Some obvious statements and questions

             Traditionally, the European Civilization originated from three factors. First of them is the concept of religion with an universal, to some extent abstract, God. The development of religion was possible by creation of an organized Society from tribal groups which in turn established material culture (agriculture, simple machines and constructions). The third factor is the formation of a historical society (ways of communication such as common language, writing, creation of an army and conquest or defense of the territory, etc.). The societies based on these three principles (religion, material culture, state organization) survived, roughly speaking, till the industrial revolution which began in the first half of XIX century, let's say about 200 years ago. It would be not so obvious to determine the main factors leading to the industrial revolution, but one of them must be singled out for the purpose of this talk namely, the development of science and of craftmanship on the scale larger than the society it was conceived in. In other words, technology started to support the military and organizational power of those societies organized by the State government.

            The industrial development created at first a tumultous era of a colonial expansion, wars on an unimaginable so-far scale and, in result, an aggregation of wealth by a relatively narrow group. It had also one good consequence. Namely, it created a system of a global communication and exchange of goods and people. But, to create all that, science was needed as a concerted and organizational effort as means of an educational development on a global scale.

            In effect, the basic research and education system was the origin of modern European civilization in the XX century. In other words, XIX-century industrial revolution combined with the XX-century research and development (R&D) resulted in the prosperity and peace of the Western world at the beginning of XXI-st century. The question is then: what's next?

2. XXI-st century society: from information-driven society to curiosity-driven social environment?

            The progress in science and society organization has been driven by ingenious scientists, innovators, and artists. One should not only mention Thomas Edison, Nicola Tesla or Louis Pasteur, among many others, as the great innovators, but also Isaac Newton, Maria Skłodowska-Curie or Werner Heisenberg on the same level, not forgetting Leonardo da Vinci or Cornelius Escher. All those people have changed our mental approach towards the world we are accommodated in, as well as try to change. However, in recent history the inventions such as the computer, genetically modified food and drugs, automated banking, etc. cannot be ascribed to single individuals. Why is it so?

             The great individuals created principal categories of understanding the world. Now is the time to implement the knowledge to the principal life with its simultaneous preservation in pristine form, at least to some extent. This requires a universal education, as high as possible, of the widest possible strata of our society. Only well educated individual will understand what is good for him simply because he knows how to choose a politician or a healthy diet, as well as is immune of a cheap ideology. To achieve such complex goals an interdisciplinary approach is necessary.

            This may sound as a new utopia to some, but by the universal education I mean first of all the disciplines improving the rigor of thought such as logic and mathematics, biology with physics, and principal understanding (not only friendly using!) of our high-tech inventions. These subjects should be taught at least as much as humanities (literature, classical philosophy, etc.). I think some politicians, but also some theologians, may be frightened to death by making an independent thinking as the fundamental principle.

            To summarize: a universal higher (and permanent) education is for me the sine qua non condition of our survival as a modern society. In some respects, this is already taking place on a limited scale. One of the principal factors of the new, XXI-st century society is the formation of a global electronic and environmental village which should be based on inventions such as:

 ·         individual TV programming,

·         the internet and particularly the world-wide-web universal accessibility,

·         permanent monitoring of the global environment,

·         permanent medical monitoring,

·         preservation (self-reproduction) of energy,

·         sustanaible (stable) development.

             The Science and the Arts should be equiimportant parts of our culture, not only the politically driven information system of mass media. From that point of view Scandinavian model seems to be more appealing to me than the so-called Anglo-Saxon model making the life leisurable but not stable.

             The principal question is: is all that realizable and sufficient for a stable humankind? I do not know, but let us start first with creating a proper, in a sense PanEuropean System of Education. Every European beaurocrat in Brussels should speak fluently at least three languages for the beginning.

 3. Where are we now in EU?

             Let me first voice my pet European project: A free 24-hour educational channel for whole EU should start immediately. Some of its programs should be included in the high-school curriculum throughout the EU. This could be quite a beginning: historical, geographical, scientific, etc. programs of such EDUSAT EUROPE could be a good competitor for the American channels such as Discovery or History, which sometimes distort world history, particularly of smaller countries such as mine. The idea is so obvious, that I am pretty surprised that no EU politician voiced it so far. The OECD experts visiting our Ministry in November 2006 were quite surprised by this simple idea when I voiced it. We shall see what it is going to result in. Let me also say few words on two other programs beginning right now.

            The framework FP-7 program for the period 2007-13 is the step in the right direction. This is because for the first time individual researcher projects in fundamental sciences can be founded through a European project (Program Ideas). Obviously, the larger programs Cooperation and People are still very important, as they will bring together and unify smaller groups from different countries. However, creating a unique climate for the frontline research is equally important and usually performed in small groups.

            The second initiative is the idea of creating a prestigious European Institute of Technology. Although this idea borrows from the American initiatives MIT and Caltech, it is worth of a strong support, particularly, if the new members will be participating in it on an equal footing. The important thing is that the new EU members are not treated arrogantly by the largest older members.

4. New initiatives in Poland

             Below I list main initiatives being developed in the Ministry of Science and Higher Education (MNSzW). For clarity, I list them point by point:

 1.      First National Framework Research Program (Krajowy Program Ramowy, KPR) listing the strategic areas of research, largely in accordance with the European FP-7 Program. KPR is now being reevaluated after the first two years of its existence.

2.      Organization of the National Centre of Research and Development (Narodowe Centrum Badań i Rozwoju, NCBR), to finance particularly the economy and industry related research.

3.      Reevaluation of almost all scientific institutions (almost 900 in total) to select 20% leading scientific institutions for the next 4 years in each discipline in Science, Humanities, and Medicine.

4.      Idea of creating the National Agency for Fundamental Research (still in not-so-concrete form).

            Apart from that, there are many smaller initiatives available on the Ministry web page (www.mnisw.gov.pl).

5. Examples of strategic problems in fundamental science which should lead to applications shortly

            Below I list again the catch phrases of frontline research topics and disciplines, most of them are of an interdisciplinary character:

1.      Quantum computing and computers.

2.      Nanoscience vs. Nanotechnology.

3.      Brain research by physical methods (MRI, etc.).

4.      Security surveillance preserving the basic human freedom in a democratic society.

5.      Preservation of civilization after the resources (fossile fuels) run out.

6.      Climate change vs. sustanaible development, etc.

             I am sure, every educated and socially conscious person can add here his/her own priorities. I underline again, all these subjects are interdisciplinary in nature. Hence, they require formation of advanced teams of widely knowledgeable individuals. This requirement brings us back again to the high(est) education development in to order to tackle those complex but necessary problems.

 6. Difficulties in implementing universal education standards (e.g. in Poland)

 Again , I just list the main issues in one sentence, as I see them personally:

 1.      Ignorance of politicians about science.

2.      Political populism and opportunism directed towards less educated part of society (unfortunately, still the majority!).

3.      Conservatism of the part of the Church hierarchy.

4.      Populistic media, almost total science illiteracy among the journalists.

5.      Underestimation and misunderstanding of science (and even of ideas of democracy) by the society at large.

I should underline, I am not trying to be political. Instead, I am trying simply to state the difficulties.

7. Concluding remarks

            The slogan during the second-term presidential campaign of President Bill Clinton was: It's the education, stupid! (before the first term it had been: It's the economy, stupid!). I think the EU, as it evolves, can overcome a thousand years of prejudice, wars, partitions to create the Educational Union. I am wondering if we have any other option, since our natural resources are scarce.

The text bases partly on the discussions within our Science Policy Committee. Nonetheless, the responsibility for the opinions stated rests solely on me. I would like to thank also the Societas Humoldtiana Polonorum for the invitation and the warm atmosphere during the meeting.