C-AXIS OPTICAL-RESPONSE OF FULLY OXYGENATED YBA2CU3O7-DELTA - OBSERVATION OF DIRTY-LIMIT-LIKE SUPERCONDUCTIVITY AND RESIDUAL UNPAIRED CARRIERS

被引：100

作者：

SCHUTZMANN, J ^{[1
]}

TAJIMA, S ^{[1
]}

MIYAMOTO, S ^{[1
]}

TANAKA, S ^{[1
]}

机构：

[1] TOKAI UNIV,DEPT PHYS,HIRATSUKA,KANAGAWA 25912,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.73.174

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a completely metallic far-infrared c-axis response of YBa2Cu3O7-delta for a fully oxygenated crystal. The normal state is determined by a temperature and frequency dependent scattering rate of the charge carriers. At T << T(c) the spectra are characterized by the onset of an absorption process in the energy range of (4-5)k(B)T(c) and by the possible coexistence of paired and unpaired carriers. The estimated anisotropy ratio in the penetration depth (almost-equal-to 8) suggests a unique superconductivity property, dirty-limit-like superconductivity in the c direction and clean limit in the a direction.

引用

页码：174 / 177

页数：4

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