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

doi:10.1103/PhysRevB.69.056501

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

Faculty of Science and Technology

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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 language	Undefined
Pages (from-to)	056501-
Journal	Physical Review B (Condensed Matter and Materials Physics)
Volume	69
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.69.056501
Publication status	Published - 2004

Keywords

METIS-218665
IR-47778

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10.1103/PhysRevB.69.056501

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Cite this

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AU - Mazin, I.I.

AU - Andersen, O.K.

AU - Jepsen, O.

AU - Golubov, Alexandre Avraamovitch

AU - Dolgov, O.V.

AU - Kortus, J.

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AB - 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

KW - METIS-218665

KW - IR-47778

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DO - 10.1103/PhysRevB.69.056501

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JO - Physical review B: Covering condensed matter and materials physics

JF - Physical review B: Covering condensed matter and materials physics

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