THE SPECIFIC-HEAT OF BA0.6K0.4BIO3 BELOW 2K

被引：0

作者：

HUSSEY, NE ^{[1
]}

WAKELIN, JP ^{[1
]}

BREWER, DF ^{[1
]}

HARGREAVES, TE ^{[1
]}

MCMENAMIN, CS ^{[1
]}

THOMSON, AL ^{[1
]}

PRASSIDES, K ^{[1
]}

机构：

[1] UNIV SUSSEX,SCH CHEM & MOLEC SCI,BRIGHTON BN1 9QJ,E SUSSEX,ENGLAND

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)91486-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have measured the specific heat C of a polycrystalline sample of the non-cuprate superconductor Ba0.6K0.4BiO3 (T(c) almost-equal-to 27K) from T = 1.8K down to T = 0.1K. The data could be fitted accurately to the expression C = AT-2 + alphaT(n) + betaT(3) where n= 0.53 +/- 0.10. The nuclear term (AT-2) is attributed to the presence of a crystalline electric field gradient on the Bi nuclei. The residual specific heat term (alphaT(n)) has also been observed in the low temperature specific heat of several cuprate high-T(c) superconductors (0.3 less-than-or-equal-to n less-than-or-equal-to 1) suggesting a possible common origin in all of these systems.

引用

页码：1973 / 1974

页数：2

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