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Two-band BCS model describes well the thermodynamics of MgB$_2$

Todor M. Mishonov·Valery L. Pokrovsky·Hongduo Wei
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Abstract

Based on weakly-coupled anisotropic BCS theory, the dependence of energy gap and specific heat on temperature are evaluated for superconductor MgB$_2$, and the results are compared with experimental data.We show that the weak coupling anisotropic BCS theory describes thermodynamic experimental data with high precision 3-6%.

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Todor M. Mishonov, Valery L. Pokrovsky, Hongduo Wei. 2004-06-11. Two-band BCS model describes well the thermodynamics of MgB$_2$. https://arxiv.org/abs/cond-mat/0312210

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