APP B34/22, p. 1323 abstract

Acta Physica Polonica B

Vol. 34, No. 22, February 2003, page 1323

Transport Properties of UX_1-xY_1+x (X=P, As, Sb; Y=S, Se, Te) Ferromagnet: Is There an Analogy Between the Nonmagnetic Kondo-Like System and the Classical Heavy Fermion One?

Zygmunt Henkie, Ryszard Wawryk, Andrzej Wojakowski, Adam Pietraszko, Tomasz Cichorek, Frank Steglich

The a-axis thermoelectric power, S(T) of the two-level-system Kondo ferromagnets UPS, UAs_1-xSe_1+x and USbTe have been examined. Two peaks of S(T) dependence, related to two characteristic temperatures of electronic scattering, T^*₁ and T^*₂, are observed below the Curie temperature. The temperature T^*₁, which we specify as the Kondo temperature is independent of x and equals 29.9 \pm 1.7 K. An overall similarity of S(T,x) behaviour for UAs_1-xSe_1+x and that for Ce_xY_1-xCu_2.05Si₂ heavy-fermion alloy system is observed and its origin is discussed.

PACS numbers: 75.50.Cc, 72.15.Jf, 72.15.Qm

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Acta Physica Polonica B

Vol. 34, No. 22, February 2003, page 1323

Transport Properties of UX1-xY1+x (X=P, As, Sb; Y=S, Se, Te) Ferromagnet: Is There an Analogy Between the Nonmagnetic Kondo-Like System and the Classical Heavy Fermion One?

Transport Properties of UX_1-xY_1+x (X=P, As, Sb; Y=S, Se, Te) Ferromagnet: Is There an Analogy Between the Nonmagnetic Kondo-Like System and the Classical Heavy Fermion One?