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

[1]

Allen P. B., 1989, Physical properties of high temperature superconductors I, P213

[2] STRUCTURAL PHASE-TRANSFORMATIONS AND SUPERCONDUCTIVITY IN LA2-XBAXCUO4 [J].

AXE, JD ;

MOUDDEN, AH ;

HOHLWEIN, D ;

COX, DE ;

MOHANTY, KM ;

MOODENBAUGH, AR ;

XU, YW .

PHYSICAL REVIEW LETTERS, 1989, 62 (23) :2751-2754

[3] ELASTIC ANOMALIES AND PHASE-TRANSITIONS IN HIGH-TC SUPERCONDUCTORS [J].

BHATTACHARYA, S ;

HIGGINS, MJ ;

JOHNSTON, DC ;

JACOBSON, AJ ;

STOKES, JP ;

GOSHORN, DP ;

LEWANDOWSKI, JT .

PHYSICAL REVIEW LETTERS, 1988, 60 (12) :1181-1184

[4] ANOMALOUS ULTRASOUND PROPAGATION IN HIGH-TC SUPERCONDUCTORS - LA1.8SR0.2CUO4-Y AND YBA2CU3O7-DELTA [J].

BHATTACHARYA, S ;

HIGGINS, MJ ;

JOHNSTON, DC ;

JACOBSON, AJ ;

STOKES, JP ;

LEWANDOWSKI, JT ;

GOSHORN, DP .

PHYSICAL REVIEW B, 1988, 37 (10) :5901-5904

[5] LATTICE INSTABILITY AND SOFT PHONONS IN SINGLE-CRYSTAL LA2-XSRXCUO4 [J].

BONI, P ;

AXE, JD ;

SHIRANE, G ;

BIRGENEAU, RJ ;

GABBE, DR ;

JENSSEN, HP ;

KASTNER, MA ;

PETERS, CJ ;

PICONE, PJ ;

THURSTON, TR .

PHYSICAL REVIEW B, 1988, 38 (01) :185-194

[6] CUBE-RESONANCE METHOD TO DETERMINE ELASTIC CONSTANTS OF SOLIDS [J].

DEMAREST, HH .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1971, 49 (03) :768-&

[7] STRUCTURAL INSTABILITY IN SINGLE-CRYSTALS OF THE HIGH-TC SUPERCONDUCTOR LA2-XSRXCUO4 [J].

GEISER, U ;

BENO, MA ;

SCHULTZ, AJ ;

WANG, HH ;

ALLEN, TJ ;

MONAGHAN, MR ;

WILLIAMS, JM .

PHYSICAL REVIEW B, 1987, 35 (13) :6721-6724

[8] ELASTIC SOFT MODE IN PEROVSKITE-TYPE LAYER-STRUCTURE MATERIALS [J].

GOTO, T ;

LUTHI, B ;

GEICK, R ;

STROBEL, K .

PHYSICAL REVIEW B, 1980, 22 (07) :3452-3458

[9] VALENCE FLUCTUATION ASPECTS OF HIGH-TEMPERATURE SUPERCONDUCTORS [J].

KIM, TJ ;

LUTHI, B ;

SCHWARZ, M ;

KUHNBERGER, H ;

WOLF, B ;

HAMPEL, G ;

NIKL, D ;

GRILL, W .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1988, 76-7 :604-606

[10] OPTIMIZATION BY SIMULATED ANNEALING [J].

KIRKPATRICK, S ;

GELATT, CD ;

VECCHI, MP .

SCIENCE, 1983, 220 (4598) :671-680

← 1 2 3 →