Fermi-liquid behavior of electrical resistivity in the dilute uranium system UxLa1-xRu2Si2

Electrical resistivity measurements have been performed on the dilute urani um compound UxLa1-xRu2Si2 (x = 0.07) with the current along the a and the c axes between 300 K and 28 mK. The electrical resistivity, rho, along the a and the c axes decreases as temperature is lowered below 300 K. In the low -temperature region between 7 K and 28 mK, the magnetic contribution of the 5f electron to the resistivity, rho (m), exhibits the Fermi-liquid behavio r with a clear T-2 dependence. The Kadowaki-Woods ratio A(5f)/gamma (2)(5f) is estimated from rho (m) and me specific heat data previously reported, a nd Is round to be the same order as that of URu2Si2 This indicates that the enhanced density of states at the Fermi level causes the T-2 dependence of rho (m) in the dilute uranium compound UxLa1-xRu2Si2. (C) 2001 Elsevier Sc ience Ltd. All rights reserved.