TUNNEL-LIKE CHARACTERISTICS OF YBA2CU3O7-Y/CEO2/YBA2CU3O7-Y JUNCTIONS AND POSSIBLE EVIDENCE OF EXCITATIONS RESPONSIBLE FOR HIGH-TC SUPERCONDUCTIVITY

被引：13

作者：

IGUCHI, I

KUSUMORI, T

机构：

[1] Institute of Materials Science, University of Tsukuba, Tsukuba

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.46.11175

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The tunnel-like characteristics observed in YBa2Cu3O7-y/CeO2/YBa2Cu3O7-y heteroepitaxial junctions fabricated by a vacuum evaporation technique are reported. Pronounced gaplike structures around 9 and 20 mV, which depend on temperature and the additional structures at high-bias voltages (40-180 mV), are observable. The latter structures emerge rapidly near T(c) and may reflect the density of states of the possible excitations responsible for high-T(c) superconductivity. The data suggest that the excitations other than phonons are possible.

引用

页码：11175 / 11178

页数：4

共 24 条

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