Comment on "First-principles calculation of the superconducting transition in MgB2 within the anisotropic Eliashberg formalism" -: art. no. 056501

被引：49

作者：

Mazin, II ^{[1
]}

Andersen, OK

Jepsen, O

Golubov, AA

Dolgov, OV

Kortus, J

机构：

[1] USN, Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA

[2] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[3] Univ Twente, Dept Appl Phys, NL-7500 AE Enschede, Netherlands

[4] Univ Tubingen, D-72076 Tubingen, Germany

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.69.056501

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Choi [Phys. Rev. B 66, 020513 (2002)] recently presented first-principles calculations of the electron-phonon coupling and superconductivity in MgB2, emphasizing the importance of anisotropy and anharmonicity. We point out that (1) variation of the superconducting gap inside the sigma or the pi bands can hardly be observed in real samples, and (2) taking the anisotropy of the Coulomb repulsion into account influences the size of the small gap, Delta(pi).

引用

页数：3

共 8 条

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