The influence of a screened coulomb interaction on the Raman response in overdoped cuprate superconductors

被引：0

作者：

Rieck, CT ^{[1
]}

Manske, D ^{[1
]}

Fay, D ^{[1
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-2000 Hamburg, Germany

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1998年 / 59卷 / 10-12期

关键词：

D O I：

10.1016/S0022-3697(98)00155-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present calculations of the response function for electronic Raman scattering in clean d-wave superconductors. Vertex corrections in a conserving approximation lead to contributions to the B-1g response which remove the singularity at the threshold energy 2 Delta(0), yielding instead a peak of comparable intensity as in the A(1g) response. A short-range electron-electron interaction broadens the peak and modifies the low energy spectrum. We obtain lineshapes in good agreement with experimental data on Ca-doped YBa2Cu3O7. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：2006 / 2008

页数：3

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