Thermopower of YbIn1-xAgCu4 alloys (x = 0.275) - art. no. 085103

摘要

We report results of thermopower measurements of the YbIn1-xAgxCu4 alloys (x = 0, 0.15, and 0.275) and of the nonmagnetic LuInCu4 compound. The thermopower investigations are complemented by resistivity and ac-susceptibility measurements. The results are explained within a two-phase model with different characteristic temperatures. For x = 0.15, one can observe Fermi liquid behavior up to 20 K: the - a T-1 dependence of the thermopower and the rho (01) + b(1)T(2) dependence of the resistivity. For higher temperatures approaching the valence transition temperature T-v, the resistivity can be described by rho (02) + b(2) T-3, while the thermopower is again proportional to T. Similar trends are observed for other values of x as well. [References: 13]