Thermodynamics of anisotropic-gap and multiband clean BCS superconductors
T. Mishonov, E. Penev
TL;DR
This paper derives thermodynamic properties of multiband anisotropic-gap clean BCS superconductors, including free energy and specific heat jumps, using a separable-kernel approximation, with applications to various superconductor models.
Contribution
It introduces a unified derivation of thermodynamic quantities for multiband anisotropic-gap superconductors within the BCS framework using a separable-kernel approach.
Findings
Derived expressions for free energy and specific heat jumps.
Applied results to two-band, d-wave, and MgB₂ models.
Provided a general framework for anisotropic-gap superconductors.
Abstract
The free energy, non-gradient terms of the Ginzburg-Landau expansion, and the jump of the specific heat of a multiband anisotropic-gap clean BCS superconductor are derived in the framework of a separable-kernel approximation. Results for a two-band superconductor, d-wave superconductor, and some recent models for MgB_2 are derived as special cases.
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