Zn-substitution effects on the optical conductivity in YBa2Cu3O7-δ crystals:: Strong pair breaking and reduction of in-plane anisotropy

被引：56

作者：

Wang, NL ^{[1
]}

Tajima, S ^{[1
]}

Rykov, AI ^{[1
]}

Tomimoto, K ^{[1
]}

机构：

[1] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 135, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.57.R11081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zn substitution effects on the a-, b-, and c-axis optical conductivity spectra have been investigated for optimally annealed YBa2Cu3O7-delta crystals. It was revealed that a very small amount of Zn seriously affects the low-energy charge dynamics in both normal and superconducting states. In addition to the increase of scattering rates, Zn substitution introduces additional features in the conductivity spectra and reduces the in-plane anisotropy by suppressing the plasma frequency in the b direction in the normal state. In the superconducting state, a very strong anisotropic pair-breaking effect was found.

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页码：R11081 / R11084

页数：4

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