Theoretical investigation of electronic specific heat of two-band superconductors

Details Theoretical investigation of electronic specific heat of two-band superconductors Theoretical investigation of electronic specific heat of two-band superconductors

2011-07-25

arxiv.org/abs/1107.5024v1

Physics

Condensed Matter

Superconductivity

20 pages, 7 figures, 3 tables

Scientific paper

We apply the generalized two-band model of superconductivity to calculate the electronic contribution to the specific heat, superconducting gaps and electron-boson coupling constants of the multi-band layered superconductors MgB2 and Ba(Fe0.925Co0.075)2As2. For both compounds, the obtained temperature-behavior of the specific heat well describes the experimental data. We compare our findings with the "two-band - model" that is frequently used to calculate the electronic specific heat, and that is applicable only for superconductors with strong interband scattering ("dirty" enough superconductors).

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