Quasiparticle transport in the vortex state of YBa2Cu3O6.9

被引：107

作者：

Chiao, M ^{[1
]}

Hill, RW

Lupien, C

Popic, B

Gagnon, R

Taillefer, L

机构：

[1] Canadian Inst Adv Res, Montreal, PQ H3A 2T8, Canada

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.82.2943

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of vortices on quasiparticle transport in cuprate superconductors was investigated by measuring the low temperature thermal conductivity of YBa2CU3O6.9 in magnetic fields up to 8 T. The residual linear term (as T --> 0) is found to increase with held, directly reflecting the occupation of extended quasiparticle states. A study for different Zn impurity concentrations reveals good agreement with recent calculations for a d-wave superconductor. It also provides a quantitative measure of the gap near the nodes. [S0031-9007(99)08763-3].

引用

页码：2943 / 2946

页数：4

共 27 条

[1] Evidence for field-induced excitations in low-temperature thermal conductivity of Bi2Sr2CaCu2O8 [J].