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STRONG COUPLING EFFECTS ON THE LOW-FREQUENCY CONDUCTIVITY OF SUPERCONDUCTORS

被引：13
作者：
AKIS, R
CARBOTTE, JP
机构：
[1] Department of Physics, McMaster University, Hamilton
来源：
SOLID STATE COMMUNICATIONS | 1991年 / 79卷 / 07期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/0038-1098(91)90913-G
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
When examining the conductivity at low frequencies in a dirty BCS superconductor, one expects to see a peak just below T(c) due to the presence of coherence factors. In this paper, we study how strong coupling effects within the Eliashberg formalism influence this peak. We find that if the coupling strength is sufficient, the peak is eliminated. We have also studied the effect of varying the frequency and the impurity concentration have on the magnitude of the peak.
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页码：577 / 581
页数：5
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