Raman scattering from a superconductivity-induced bound state in MgB2 -: art. no. 107002

被引：9
|
作者：
Zeyher, R [1 ]
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.90.107002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
It is shown that the sharp peak in the E-2g Raman spectrum of superconducting MgB2 is due to a bound state caused by the electron-phonon coupling. Our theory explains why this peak appears only in the spectra with E-2g symmetry and only in the sigma but not the pi bands. The properties of the bound state and the Raman spectrum are investigated, also in the presence of impurity scattering.
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页数：4
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