TLS Kondo effect in structurally disordered ThAsSe

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:272

Article; Proceedings Paper

Cichorek, T ; Henkie, Z ; Custers, J ; Gegenwart, P ; Stegfich, F

关键词: two-channel Kondo effect;    two-level systems;   

DOI  :  10.1016/j.jmmm.2003.12.1109

来源: Elsevier

【 摘 要 】

Low-temperature electrical-resistivity, rho(T), measurements on single crystals of the structurally disordered ThAsSe reveal an anomalous scattering mechanism, which is apparently derived from two-level systems. For the ThAsSe specimen displaying a resistivity saturation at millikelvin temperatures, a crossover from a logarithmic to a non-Fermi-liquid behavior Deltarho proportional to 1 - aT(1/2) is observed upon cooling below similar or equal to4 K. A comparison of experimental results with the theoretical ones yields a characteristic energy scale of the order of a few K for ThAsSe. (C) 2003 Elsevier B.V. All rights reserved.

【 授权许可】

Free