INTERPLAY BETWEEN LATTICE SOFTENING AND HIGH-T(C) SUPERCONDUCTIVITY IN LA1.86SR0.14CUO4

被引：68

作者：

NOHARA, M ^{[1
]}

SUZUKI, T ^{[1
]}

MAENO, Y ^{[1
]}

FUJITA, T ^{[1
]}

TANAKA, I ^{[1
]}

KOJIMA, H ^{[1
]}

机构：

[1] YAMANASHI UNIV,INST INORGAN SYNTH,KOFU,YAMANASHI 400,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.70.3447

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High-resolution ultrasonic measurements have been performed on single-crystalline La1.86Sr0.14CuO4 in magnetic fields H up to 14 T. We found that by reducing temperature the transverse elastic constant (C-11 - C-12)/2 starts to soften from about 50 K and continues to soften down to T(c)(H), even when T(c)(H) is reduced to 14 K by magnetic field. The softening turns to rapid hardening by the emergence of superconductivity. This behavior of (C-11 - C-12)/2 is a consequence of the structural instability of the orthorhombic phase and disappearance of the instability caused by emergence of the superconducting state.

引用

页码：3447 / 3450

页数：4

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