ANOMALOUS TEMPERATURE-DEPENDENCE OF THE WORK FUNCTION IN YBA2CU3O7-DELTA

被引：65

作者：

RIETVELD, G

CHEN, NY

VANDERMAREL, D

机构：

[1] Delft University of Technology, Department of Applied Physics, 2628 CJ Delft

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.69.2578

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the experimental observation of a discontinuous change in slope al T(c) of the temperature dependence of the work function of YBa2Cu3O7-delta. We interpret this effect as a superconductivity-induced temperature dependence of the chemical potential. Using a general thermodynamic relation for second-order phase transitions and published values of the specific heat jump, we extract a value for dlnT(c)/dn, with n the charge carrier density. This value is consistent with hole-type superconductivity.

引用

页码：2578 / 2581

页数：4

共 15 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].