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Temperature dependence of the specific heat and the penetration depth of anisotropic-gap BCS superconductors for a factorizable pairing potential
T. M. Mishonov, S. I. Klenov, E. S. Penev
An explicit expression for the temperature dependence of the specific heat of clean anisotropic-gap superconductors is derived within the weak-coupling BCS approximation. The speci…
Influence of the van Hove singularity on the specific heat jump in BCS superconductors
T. Mishonov, S. -L. Drechsler, E. Penev
Within the weak-coupling BCS scheme we derive a general form of the coefficients in the Ginzburg-Landau expansion of the free energy of a superconductor for the case of a Fermi lev…
Specific Heat Discontinuity in Impure Two-Band Superconductors
Todor M. Mishonov, Evgeni S. Penev, Joseph O. Indekeu +1
The Ginzburg-Landau coefficients, and the jump of the specific heat are calculated for a disordered two-band superconductor. We start with the analysis of a more general case arbit…
Superconductivity of overdoped cuprates: the modern face of the ancestral two-electron exchange
T. M. Mishonov, J. O. Indekeu, E. S. Penev
The single-site two-electron exchange amplitude J_sd between the Cu 4s and Cu 3d_{x^2-y^2} states is found to be the pairing mechanism of high-T_c overdoped cuprates. The nonintera…
Thermodynamics of anisotropic-gap and multiband clean BCS superconductors
T. Mishonov, E. Penev
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 f…
The 3d-to-4s-by-2p highway to superconductivity in cuprates
T. M. Mishonov, J. O. Indekeu, E. S. Penev
High-temperature superconductors are nowadays found in great variety and hold technological promise. It is still an unsolved mystery that the critical temperature T_c of the basic…