Muon spin relaxation studies of Zn-substitution effects in high-T-c cuprate superconductors

被引：216

作者：

Nachumi, B ^{[1
]}

Keren, A ^{[1
]}

Kojima, K ^{[1
]}

Larkin, M ^{[1
]}

Luke, GM ^{[1
]}

Merrin, J ^{[1
]}

Tchernyshov, O ^{[1
]}

Uemura, YJ ^{[1
]}

Ichikawa, N ^{[1
]}

Goto, M ^{[1
]}

Uchida, S ^{[1
]}

机构：

[1] UNIV TOKYO, DEPT SUPERCONDUCT, BUNKYO KU, TOKYO 113, JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 27期

关键词：

D O I：

10.1103/PhysRevLett.77.5421

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed transverse-field muon spin relaxation measurements of the Zn-substituted cuprate high-T-c superconductors: La2-xSrx(Cu1-yZny)O-4 and YBa2(Cu1-yZny)(3)O-6.63. The superconducting carrier density/effective mass n(s)/m* ratio at T --> 0 decreases with increasing Zn concentration in a manner consistent with our ''swiss cheese'' model in which charge within an area pi xi(ab)(2) around each Zn are excluded from the superfluid. We discuss this result in the context of Bose condensation, pair localization, and pair breaking.

引用

页码：5421 / 5424

页数：4

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