MAGNETIC-ORDERING, HYPERFINE, AND LINEAR CONTRIBUTIONS TO THE LOW-TEMPERATURE SPECIFIC-HEAT OF (Y1-XPRX)BA2CU3O7-DELTA

被引：33

作者：

PHILLIPS, NE

FISHER, RA

CASPARY, R

AMATO, A

RADOUSKY, HB

PENG, JL

ZHANG, L

SHELTON, RN

机构：

[1] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550

[2] UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.43.11488

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Specific-heat measurements on (Y1-xPrx)Ba2Cu3O7-delta, for x = 0, 0.1, 0.2, 0.3, and 1, with 0.3 less-than-or-equal-to T less-than-or-equal-to 65 K, which include measurements in magnetic fields to 7 T, are reported. The combination of low-temperature and in-field data allows the separation of hyperfine and magnetic-ordering contributions from the low-temperature linear term, gamma-0T. The value of gamma-0, 200 mJ/molPrK2 for x = 0.1, 0.2, and 0.3, is substantially lower than that deduced from earlier measurements, but the determination of a cutoff temperature of approximately 50 K for this contribution adds to the appearance of heavy-fermion-like behavior.

引用

页码：11488 / 11491

页数：4

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