期刊
PHYSICAL REVIEW LETTERS
卷 87, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.87.087005
关键词
-
Density-functional calculations of the phonon spectrum and electron-phonon coupling in MgB2 are presented. The E-2g phonons, which involve in-plane B displacements, couple strongly to the p(x,y) electronic bands. The isotropic electron-phonon coupling constant is calculated to be about 0.8. Allowing for different order parameters in different bands, the superconducting lambda in the clean limit is calculated to be significantly larger. The E-2g phonons are strongly anharmonic, and the nonlinear contribution to the coupling between the E-2g modes and the p(x,y) bands is significant.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据