FAR-INFRARED TRANSMISSION OF YBA2CU3O7-DELTA THIN-FILMS

被引：4

作者：

DEVAULCHIER, LA

BONTEMPS, N

VIEREN, JP

GULDNER, Y

COMBESCOT, R

THIVET, C

GUILLOUXVIRY, M

PERRIN, A

机构：

[1] ENS,CNRS,URA 1306,F-75005 PARIS,FRANCE

[2] UNIV RENNES 1,CNRS,URA 1495,F-35042 RENNES,FRANCE

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)91766-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report transmission measurements of YBa2Cu3O7 thin films at energies (4 to 85 cm(-1)) far below the gap and temperatures between 20 and 250 K. From the frequency dependence, we deduce an electromagnetic penetration depth at 25 K of 1850 Angstrom. We observe a surprisingly large transition width Delta T-c (10% - 90%) of more than 10 K at all energies, compared to 0.6 K in DC measurements. We examine this feature in the framework of a strong coupling phenomenology.

引用

页码：1083 / 1084

页数：2

共 5 条

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