Out-of-plane fluctuation conductivity of layered superconductors in strong electric fields

TL;DR

This paper investigates how strong electric fields influence the out-of-plane fluctuation conductivity in layered superconductors near the transition, revealing potential for controlling superconducting properties.

Contribution

It provides a theoretical analysis of the non-Ohmic effects of high electric fields on out-of-plane conductivity using the Langevin approach and extends to various field orientations and anisotropic regimes.

Findings

High electric fields suppress out-of-plane fluctuation conductivity

Strong electric fields cause significant broadening of the superconducting transition

Results applicable to different electric field orientations and anisotropic conditions

Abstract

The non-Ohmic effect of a high electric field on the out-of-plane magneto-conductivity of a layered superconductor near the superconducting transition is studied in the frame of the Langevin approach to the time-dependent Ginzburg-Landau equation. The transverse fluctuation conductivity is computed in the self-consistent Hartree approximation for an arbitrarily strong electric field and a magnetic field perpendicular to the layers. Our results indicate that high electric fields can be effectively used to suppress the out-of-plane fluctuation conductivity in high-temperature superconductors and a significant broadening of the transition induced by a strong electric field is predicted. Extensions of the results are provided for the case when the electric field is applied at an arbitrary angle with respect to the layers, as well as for the three-dimensional anisotropic regime of a strong interlayer coupling.