Non-Adiabatic Effects of Superconductor Silane under High Pressure

We present the investigations of non-adiabatic effects by including vertex corrections in the standard Eliashberg theory and show that high phonon frequency is unfavorable to superconductivity in the regime of strong vertex correction. This means that it is hard to find high-transition-temperature s...

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Bibliographic Details
Published inChinese physics letters Vol. 27; no. 8; pp. 194 - 196
Main Author 范巍 王江龙 邹良剑 曾雉
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2010
Subjects
Coulomb friction
Light elements
Phonons
Silanes
Superconductivity
Superconductors
Transition temperature
声子频率
理论预测
绝热效果
转变温度
非绝热效应
高温超导体
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Summary:We present the investigations of non-adiabatic effects by including vertex corrections in the standard Eliashberg theory and show that high phonon frequency is unfavorable to superconductivity in the regime of strong vertex correction. This means that it is hard to find high-transition-temperature superconductors in the compounds with light elements if the non-adiabatic effects are strong. The interplay interaction between non-adiabatic effect and Coulomb interaction makes the transition temperature of silane superconductor not so high as predicted by the standard Eliashberg theory.
Bibliography:11-1959/O4
TQ325.12
TM26
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/8/087402