Unusual magnetic-field dependence of the electrothermal conductivity in the mixed state of cuprate superconductors

被引：16

作者：

Clayhold, JA ^{[1
]}

Xue, YY ^{[1
]}

Chu, CW ^{[1
]}

Eckstein, JN ^{[1
]}

Bozovic, I ^{[1
]}

机构：

[1] VARIAN RES CTR,PALO ALTO,CA 94304

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.53.8681

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the mixed state of a superconductor, the electrothermal conductivity, P, which measures the electrical current density produced by a thermal gradient, is supposed to be independent of both the magnetic field and the details of the vortex motion. Measurements of the thermopower and resistivity in YBa2Cu3O7-delta, Bi2Sr2CaCu2Os8+delta, and Tl2Ba2CaCU2O8+delta show an unusual, sharp structure in P at low field. In Bi2Sr2CaCU2O8+delta, the extra contribution is negative,causing a sign change of the thermopower versus applied magnetic field. The possible origins of the low-field anomaly are discussed.

引用

页码：8681 / 8686

页数：6

共 17 条

[1]

Blatt FJ, 1976, THERMOELECTRIC POWER, DOI 10.1007/978-1-4613-4268-7

[2] MOTION OF VORTEX STRUCTURE IN TYPE-2 SUPERCONDUCTORS IN HIGH MAGNETIC FIELD [J].