The effect of anharmonicity on the isotope shift of superconducting transition temperature

被引:1
|
作者
Salamatov, EI [1 ]
机构
[1] Phys Tech Inst, Izhevsk 426001, Russia
关键词
electron-phonon interactions; anharmonicity;
D O I
10.1016/S0038-1098(98)00031-3
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The effect of anharmonicity on the isotope shift of the superconducting transition temperature is studied within the framework of a modified pseudoharmonic approximation with due account of thermal energy fluctuations. The investigation is performed under the assumption that the main contribution to the electron-phonon interaction constant comes from the selected phonon mode. The results obtained allow the experimental data to be qualitatively interpreted. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
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页码:269 / 272
页数:4
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