Multiband superconductivity in Pb, H under pressure and CaBeSi from ab initio calculations

Bersier, C., Floris, A., Cudazzo, P. , Profeta, G., Sanna, A., Bernardini, F., Monni, M., Pittalis, S., Sharma, S., Glawe, H., Continenza, A., Massidda, S. and Gross, E. K. U. (2009) Multiband superconductivity in Pb, H under pressure and CaBeSi from ab initio calculations. Journal of Physics: Condensed Matter, 21 (16). p. 164209. ISSN 0953-8984

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Item Type:Article
Item Status:Live Archive

Abstract

Superconductivity in Pb, H under extreme pressure and CaBeSi, in the framework of the density functional theory for superconductors, is discussed. A detailed analysis on how the electron–phonon and electron–electron interactions combine together to determine the superconducting gap and critical temperature of these systems is presented. Pb, H under pressure and CaBeSi are multigap superconductors. We will address the question under which conditions does a system exhibits this phenomenon. The presented results contribute to the understanding of multiband and anisotropic superconductivity, which has received a lot of attention since the discovery of MgB2, and show how it is possible to describe the superconducting properties of real materials on a fully ab initio basis.

Keywords:Superconductivity
Subjects:F Physical Sciences > F321 Solid state Physics
Divisions:College of Science > School of Mathematics and Physics
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ID Code:22800
Deposited On:05 Jun 2016 21:02

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