Electron-phonon superconductivity in BaSn5

被引：5

作者：

Billington, David ^{[1
]}

Ernsting, David ^{[1
]}

Millichamp, Thomas E. ^{[1
]}

Dugdale, Stephen B. ^{[1
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

PHILOSOPHICAL MAGAZINE | 2015年 / 95卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

superconductivity; phonons; electronic structure; electron-phonon coupling; EXCHANGE;

D O I：

10.1080/14786435.2015.1040480

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

First-principles calculations of the electronic structure and phonon dispersion relation of the superconducting compound [GRAPHICS] were performed. This has allowed the calculation of the electron-phonon matrix elements from which the electron-phonon coupling constant was found to be [GRAPHICS] . Application of the Allen-Dynes formula with [GRAPHICS] yielded a superconducting transition temperature of [GRAPHICS] K. The calculated [GRAPHICS] agrees well with the available experimental data and indicates that [GRAPHICS] is an electron-phonon superconductor with intermediate strength electron-phonon coupling.

引用

页码：1728 / 1737

页数：10

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