STRUCTURE AND SUPERCONDUCTIVITY OF RARE-EARTH-DOPED LA2-XSRXCUO4

被引：10

作者：

BUCHNER, B ^{[1
]}

BREUER, M ^{[1
]}

SCHLABITZ, W ^{[1
]}

VIACK, A ^{[1
]}

SCHAFER, W ^{[1
]}

FREIMUTH, A ^{[1
]}

KAMPF, AP ^{[1
]}

机构：

[1] UNIV COLOGNE,INST THEORET PHYS,D-50937 COLOGNE,GERMANY

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)91369-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present results of a detailed investigation of the structural phase transitions and their influence on superconductivity in rare earth doped La2-xSrxCuO4. The structural transitions are predominantly determined by size differences of the atoms in alternating layers of the structure. In contrast to the findings in Ba-doped La2CuO4 the influence of the low temperature transition on the electronic properties is not restricted to a narrow hole doping around x similar or equal to 1/8. Our data show a strong influence of the buckling of the planar (Cu-O-Cu) bonds on the electronic properties. In particular, superconductivity disappears in the low temperature tetragonal phase if the buckling exceeds a critical strength.

引用

页码：281 / 284

页数：4

共 19 条

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