SPECIFIC-HEAT AND SUPERCONDUCTIVITY OF (LA0.925SR0.075)2CUO4

被引：32

作者：

KITAZAWA, K

ATAKE, T

SAKAI, M

UCHIDA, S

TAKAGI, H

KISHIO, K

HASEGAWA, T

FUEKI, K

SAITO, Y

TANAKA, S

机构：

[1] Univ of Tokyo, Tokyo, Jpn, Univ of Tokyo, Tokyo, Jpn

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1987年 / 26卷 / 05期

关键词：

CERAMIC MATERIALS - LANTHANUM COMPOUNDS - Electric Conductivity - SPECIFIC HEAT;

D O I：

10.1143/JJAP.26.L751

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The specific heat of (La//0//. //9//2//5Sr//0//. //0//7//5)//2CuO//4 was measured over the temperature range 14. 5-87 K. A clear specific heat jump DELTA C was observed at the critical temperature around 38 K. Subtraction of the lattice specific heat estimated by curve fitting yielded the electronic specific heat coefficient approximately 11 mJ/(mol multiplied by (times) K**2) according to the BCS relation. Comparison of this result with those of the other high T//c oxide superconductors seems to raise a difficulty in explaining the results simply by the ordinary BCS mechanism.

引用

页码：L751 / L753

页数：3