ANHARMONICITY AND ELECTRON-PHONON COUPLING IN CUPRATE SUPERCONDUCTORS STUDIED BY INELASTIC NEUTRON-SCATTERING

被引：27
|
作者：
REICHARDT, W
PINTSCHOVIUS, L
PYKA, N
SCHWEISS, P
ERB, A
BOURGES, P
COLLIN, G
ROSSATMIGNOD, J
HENRY, IY
IVANOV, AS
MITROFANOV, NL
RUMIANTSEV, AY
机构：
[1] UNIV KARLSRUHE, KRISTALL & MAT LAB, D-76131 KARLSRUHE, GERMANY
[2] CENS, CEA, CNRS, LAB LEON BRILLOUIN, F-91191 GIF SUR YVETTE, FRANCE
[3] CEN, DRF, SPH, MDN, F-38041 GRENOBLE, FRANCE
[4] IV KURCHATOV ATOM ENERGY INST, MOSCOW 123182, RUSSIA
来源：
JOURNAL OF SUPERCONDUCTIVITY | 1994年 / 7卷 / 02期
关键词：
SUPERCONDUCTIVITY; PHONON ANHARMONICITY; ELECTRON PHONON INTERACTION;
D O I：
10.1007/BF00724577
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An overview is given on anharmonic lattice vibrations originating from structural instabilities. The transverse vibrations of the chain oxygens in YBa2Cu3O7 are found to be only moderately anharmonic. Measurements of the phonon linewidths in the Cu-O bond stretching vibrations strongly support recent calculations of the electron-phonon coupling. Results are presented on superconductivity-induced frequency shifts at short wavelengths.
引用
收藏
页码：399 / 407
页数：9
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