EVIDENCE FOR NON-FERMI-LIQUID BEHAVIOR IN THE KONDO ALLOY Y1-XUXPD3

We present measurements of electrical resistivity rho(T), specific heat C(T), entropy S(T), and magnetic susceptibility chi(T) as functions of temperature T for the alloy system Y1-xUxPd3. For x -0.2, rho(T)/rho(0) is almost linear in T for 0.2 less-than-or-equal-to T less-than-or-equal-to 20 K, and C(T)/T approximately - ln(alpha-T) for 0.6 < T < 16 K. Also, the added molar entropy per U, DELTA-AS(T)-DELTA-S(0) appears to saturate to (R/2)ln)2), suggesting that DELTA-S(0) almost-equal-to (R/2)/ln(2). We argue that our data provide comprehensive evidence in a dilute alloy for the two-channel quadrupolar Kondo effect (T(K) almost-equal-to 42 K) with concomitant "marginal Fermi liquid" phenomenology.