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

Mazin, I.I. and Andersen, O.K. and Jepsen, O. and Golubov, A.A. and Dolgov, O.V. and Kortus, J. (2004) Comment on "First-principles calculation of the superconducting transition in MgB2 within the anisotropic Eliashberg formalism". Physical Review B: Condensed matter and materials physics, 69 (5). 056501. ISSN 1098-0121

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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
Item Type:	Article
Copyright:	© 2004 The American Physical Society
Faculty:	Science and Technology (TNW)
Research Group:	Low Temperatures - Biomagnetism (LT)
Link to this item:	http://purl.utwente.nl/publications/47778
Official URL:	http://dx.doi.org/10.1103/PhysRevB.69.056501
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