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.

引用

页数：4

共 14 条

[11] The MgB2 superconducting energy gaps measured by Raman spectroscopy
Quilty, JW
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2003, 385 (1-2): : 264 - 272
[12] Superconducting gap in MgB2:: Electronic Raman scattering measurements of single crystals -: art. no. 087001
Quilty, JW
Lee, S
Yamamoto, A
Tajima, S
[J]. PHYSICAL REVIEW LETTERS, 2002, 88 (08) : 4
[13] SUPERCONDUCTIVITY-INDUCED PHONON SELF-ENERGY EFFECTS IN HIGH-TC SUPERCONDUCTORS
ZEYHER, R
ZWICKNAGL, G
[J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1990, 78 (02): : 175 - 190
[14] PHONON SELF-ENERGY EFFECTS DUE TO SUPERCONDUCTIVITY - EVIDENCE FOR THE STRONG-COUPLING LIMIT IN YBA2CU3O7-DELTA
ZEYHER, R
ZWICKNAGL, G
[J]. SOLID STATE COMMUNICATIONS, 1988, 66 (06) : 617 - 622

← 1 2 →