SUPERCONDUCTIVITY AND THE LOW-TEMPERATURE ORTHORHOMBIC TO TETRAGONAL PHASE-TRANSITION IN LA2-XBAXCUO4

被引：45

作者：

BILLINGE, SJL ^{[1
]}

KWEI, GH ^{[1
]}

LAWSON, AC ^{[1
]}

THOMPSON, JD ^{[1
]}

TAKAGI, H ^{[1
]}

机构：

[1] UNIV TOKYO,DEPT APPL PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.71.1903

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relationship between the low-temperature orthorhombic-tetragonal (OT) phase transition in La2-xBaxCuO4 and the suppression of the superconducting state in samples with x = 0.125 has been investigated. Using high resolution synchrotron x-ray diffraction we show that the phase composition of a superconducting x = 0.15 sample varies with temperature identically to an x = 0.125 sample. This shows that the tetragonal structure does support bulk superconductivity in La2-xBaxCuO4 and the electronic transition which suppresses superconductivity at x = 0.125 is distinct from the OT structural transition.

引用

页码：1903 / 1906

页数：4

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