SPECIFIC-HEAT OF THE SUPERCONDUCTOR YBA2CU4O8 FROM 1.5-K TO 300-K

被引：20

作者：

JUNOD, A

GRAF, T

SANCHEZ, D

TRISCONE, G

MULLER, J

机构：

[1] Département de physique de la matière condensée, Université de Genève, Genève

来源：

PHYSICA B | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80253-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The specific heat of selected ceramic samples of the 81k-superconductor YBa2Cu4O8 prepared under an oxygen pressure of 85 bar is investigated. For the most homogeneous sample, the coefficient of the “linear” term at T≪Tc is γ*=4.9±0.2 mJ/(K2mole), and the initial Debye temperature is Θ(0)=350±10K. The specific heat jump at Tc2, ΔC/Tc−16 mJ/(K2mole), and the Sommerfeld constant evaluated at high temperatures, γ−12 mJ/(K mole), are much smaller than those of YBa2Cu3O7. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

页码：1335 / 1336

页数：2