STUDY OF THE FLUX PATTERN IN THE HIGH-TC SUPERCONDUCTOR YBA2CU3O7 BY Y-89-NMR

被引：31

作者：

BROM, HB

ALLOUL, H

机构：

[1] Laboratoire de Physique des Solides, Université de Paris Sud

来源：

PHYSICA C | 1991年 / 177卷 / 4-6期

关键词：

D O I：

10.1016/0921-4534(91)90483-F

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The field distribution in the superconducting state of the high-T(c) superconductor YBa2Cu3O7 has been probed by Y-89-NMR. Data have been taken on oriented powder samples in a field of 7.5 T for H parallel-to c-axis and H parallel-to (a,b)-plane. For H parallel-to c line broadening is only detected below 83 K, i.e. 10% lower than the zero field transition temperature T(c)(0) almost-equal-to 92 K. The temperature dependence of the linewidth is well described by a two-fluid formula if T is scaled by the melting or irreversibility temperature T* approximately 83 K instead of T(c)(0), as in the analysis of the low-field muon data.

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页码：297 / 302

页数：6

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