Field induced reduction of the low-temperature superfluid density in YBa2Cu3O6.95

被引：100

作者：

Sonier, JE

Brewer, JH

Kiefl, RF

Morris, GD

Miller, RI

Bonn, DA

Chakhalian, J

Heffner, RH

Hardy, WN

Liang, R

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] TRIUMF, Vancouver, BC V6T 2A3, Canada

[3] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.83.4156

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel high magnetic field (8 T) spectrometer for muon spin relation has been used to measure the temperature dependence of the in-plane magnetic penetration depth lambda(ab) in YBa2Cu3O6.95. At low H and low T, lambda(ab) exhibits the characteristic linear T dependence associated with the energy gap of a d(x2-y2)-wave superconductor. However, at higher fields lambda(ab) is essentially temperature independent at low T. We discuss possible interpretations of this surprising new feature in the low-energy excitation spectrum.

引用

页码：4156 / 4159

页数：4

共 26 条

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