Angular dependence of the nonlinear transverse magnetic moment of YBa2Cu3O6.95 in the Meissner state

被引：51

作者：

Bhattacharya, A ^{[1
]}

Zutic, I

Valls, OT

Goldman, AM

Welp, U

Veal, B

机构：

[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.82.3132

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The angular dependence of the nonlinear transverse magnetic moment of untwinned high-quality single crystals of YBa2Cu3O6.95 has been studied at a temperature of 2.5 K using a low frequency ac technique. The absence of any signature at angular period 2 pi/4 is analyzed in light of the numerical predictions of such a signal for a pure d(x)2(-y)2 order parameter with line nodes. Implications of this null result for the existence of a nonzero gap at all angles on the Fermi surface are discussed.

引用

页码：3132 / 3135

页数：4

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