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

被引:351
|
作者
SEAMAN, CL
MAPLE, MB
LEE, BW
GHAMATY, S
TORIKACHVILI, MS
KANG, JS
LIU, LZ
ALLEN, JW
COX, DL
机构
[1] UNIV CALIF SAN DIEGO, INST PURE & APPL PHYS SCI, LA JOLLA, CA 92093 USA
[2] SAN DIEGO STATE UNIV, DEPT PHYS, SAN DIEGO, CA 92182 USA
[3] UNIV MICHIGAN, DEPT PHYS, ANN ARBOR, MI 48109 USA
[4] OHIO STATE UNIV, DEPT PHYS, COLUMBUS, OH 43210 USA
关键词
D O I
10.1103/PhysRevLett.67.2882
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:2882 / 2885
页数:4
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