COMPLETE ELASTIC-CONSTANTS AND GIANT SOFTENING OF C66 IN SUPERCONDUCTING LA1.86SR0.14CUO4

被引：72

作者：

MIGLIORI, A

VISSCHER, WM

WONG, S

BROWN, SE

TANAKA, I

KOJIMA, H

ALLEN, PB

机构：

[1] UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611

[2] YAMANASHI UNIV,FAC ENGN,KOFU,YAMANASHI 400,JAPAN

[3] SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 64卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.64.2458

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel resonant ultrasound technique is used to measure all elastic constants and their temperature dependence in single-crystal La1.86Sr0.14CuO4. The in-plane shear modulus c66 drops by nearly half upon cooling to 227 K, an effect attributed to order-parameter fluctuations (of 2D Gaussian character) near the tetragonal-orthorhombic phase boundary. Implications for current models of the structural phase transition are discussed, as well as the effect of domains in the low-temperature orthorhombic state. © 1990 The American Physical Society.

引用

页码：2458 / 2461

页数：4

共 21 条

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