DISAPPEARANCE OF SUPERCONDUCTIVITY IN OVERDOPED LA1.15-XPR0.85SRXCUO4 AND THE ORTHORHOMBIC-TETRAGONAL PHASE-BOUNDARY

被引：12

作者：

SCHAFER, W

BREUER, M

BAUER, G

FREIMUTH, A

KNAUF, N

RODEN, B

SCHLABITZ, W

BUCHNER, B

机构：

[1] II. Physikalisches Institut, Universität Zu Köln, 50937 Köln

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.49.9248

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study of the structural and electronic phase diagram of Pr-doped La2-xSrxCuO4 is presented in order to investigate whether there is an influence of the high-temperature tetragonal-to-orthorhombic phase transition on the disappearance of superconductivity in the overdoped region. We find that Pr doping shifts the structural phase boundary to higher Sr concentrations, but that superconductivity occurs in the same Sr-concentration range as in ''pure'' La2-xSrxCuO4. Thus, the disappearance of superconductivity is not related to the high-temperature structural transition, but is determined predominantly by the hole concentration in the CuO planes.

引用

页码：9248 / 9251

页数：4

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