SPECIFIC-HEAT OF YBA2CU3O7 - ORIGIN OF THE LINEAR TERM AND VOLUME FRACTION OF SUPERCONDUCTIVITY

被引：86

作者：

PHILLIPS, NE ^{[1
]}

FISHER, RA ^{[1
]}

GORDON, JE ^{[1
]}

KIM, S ^{[1
]}

STACY, AM ^{[1
]}

CRAWFORD, MK ^{[1
]}

MCCARRON, EM ^{[1
]}

机构：

[1] DUPONT CO,DEPT CENT RES & DEV,EXPTL STN,WILMINGTON,DE 19880

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.65.357

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Correlations of the coefficient of the "linear" term in the specific heat, (0), and the discontinuity at Tc, "C(Tc), with a measured concentration of Cu2+ magnetic moments suggest the operation of a pairbreaking mechanism that limits the transition to the superconducting state and produces a contribution to (0). There is no evidence for the existence of an intrinsic contribution to (0). The value of "C(Tc) for a sample provides a measure of the volume fraction of superconductivity and a basis for correcting measured values of parameters to those characteristic of the fully superconducting state. Estimates of several quantities relevant to the strength of coupling are given. © 1990 The American Physical Society.

引用

页码：357 / 360

页数：4

共 24 条

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