First-principles calculation of the superconducting transition in MgB2 within the anisotropic Eliashberg formalism

I.I. Mazin, O.K. Andersen, O. Jepsen, Alexandre Avraamovitch Golubov, O.V. Dolgov, J. Kortus

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Abstract

Choi et al. [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, Deltapi
Original languageUndefined
Pages (from-to)056501-
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume69
Issue number5
DOIs
Publication statusPublished - 2004

Keywords

  • METIS-218665
  • IR-47778

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