MAGNETOACOUSTIC EFFECT OF HEAVY FERMION COMPOUND CEINCU2

被引：5

作者：

MATSUI, H

GOTO, T

FUJIMURA, T

ONUKI, Y

KOMATSUBARA, T

ISIKAWA, Y

SATO, K

机构：

[1] TOHOKU UNIV,DEPT PHYS,SENDAI,MIYAGI 980,JAPAN

[2] UNIV TSUKUBA,INST MAT SCI,TSUKUBA 305,JAPAN

[3] TOYAMA UNIV,COLL LIBERAL ARTS,TOYAMA 930,JAPAN

[4] TOYAMA UNIV,FAC SCI,TOYAMA 930,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 10期

关键词：

CeInCu[!sub]2[!/sub; elastic constant; heavy fermion; ultrasonic;

D O I：

10.1143/JPSJ.59.3451

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measured the temperature dependences of elastic constants of the heavy fermion compound CeInCu2 and the reference compound LaInCu2. The transverse C44 and (C11-C12)/2 modes in CeInCu2 exhibit monotonous temperature dependences. The bulk modulus CB, however, shows an anomalous softening of 6% below 130 K, which is in contrast to the normal behavior in LaInCu2. The anomalies of CB in CeIn-Cu2 indicate the coupling between the volume strain and the heavy fermion state with a large electronic Griineisen constant Ωg = 50 at 5 K. © 1990, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

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页码：3451 / 3454

页数：4

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