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.
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页码：2006 / 2008
页数：3
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