Self-consistent and Maxwell approximations to describe the excess conductivity anisotropy in FeSe above superconducting transition temperature

Abstract

Using the self-consistent approximation we calculate conductivity in an anisotropic heterogeneous media with superconducting inclusions and compare the results with those obtained previously using the Maxwell approximation and with available experimental data on excess conductivity above $T_c=$~8K in FeSe. Advantages and drawbacks of these two approximations are discussed. The obtained analytical formulas can be applied to various other anisotropic heterogeneous superconductors, including high-Tc layered superconductors.

arXiv comment6 pages, 4 figures; the work presented at the IV International Conference LaPlas-2018; to be published in the Journal of Physics: Conference Series (in press)

References in corpus (6)

• Superconductivity in single-layer films of FeSe with a transition temperature above 100 K
• Superconductivity at 36 K in beta-Fe1.01Se with the compression of the interlayer separation under pressure
• High Temperature Superconductivity in Iron Pnictides and Chalcogenides
• Inhomogeneous superconductivity and the "pseudogap state of novel superconductors
• Doubling of the critical temperature of FeSe observed in point contacts
• Gossamer bulk high-temperature superconductivity in FeSe

Cited by in corpus (1)

• Peculiar effect of sample size in layered superconductors