Effect of transport current on suppression of superconductivity with ultrashort laser pulse

TL;DR

This paper investigates how ultrashort laser pulses suppress superconductivity when a transport current is present, using a theoretical model based on BCS theory and kinetic equations, with numerical simulations exploring various pulse durations and current densities.

Contribution

It introduces a theoretical framework combining BCS relations with kinetic equations to analyze the interplay of laser pulses and transport current in superconductors.

Findings

Suppression of superconductivity depends on pulse duration and current density.

Numerical simulations show different effects for picosecond and femtosecond pulses.

Main parameters significantly influence the suppression process.

Abstract

We study the suppression of superconductivity with ultrashort laser pulse in the presence of transport current. The theoretical model is based on the BCS relations for the superconducting state coupled with kinetic equations for nonequilibrium Bogoliubov quasiparticles and phonons. The results of numerical simulation for picosecond and femtosecond laser pulses of optical and infrared ranges are given. We discuss the effects of main problem parameters, including the current density.