cerium compounds;
magnetic instability;
pressure effects;
quantum phase transition;
D O I:
10.1016/S0921-4526(99)01235-1
中图分类号:
O469 [凝聚态物理学];
学科分类号:
070205 ;
摘要:
The resistivity rho(T) of the incommensurate antiferromagnet CeCu5.8 Au-0.2 as measured along the a direction shows an increase below the ordering temperature T-N = 0.25 K. T-N decreases under hydrostatic pressure, reaching zero around p(c) similar to 5 kbar. Beyond p(c) Fermi-liquid behavior rho = rho(o) AT(2) is recovered over a T range increasing with rho. The residual resistivity po is found to decrease strongly from 93 to 66 mu Omega cm between 0 and 9.8 kbar. (C) 2000 Elsevier Science B.V. All rights reserved.