Effect of normal current on kinematic vortices

TL;DR

This paper investigates how normal currents influence kinematic vortices in superconductors, revealing transient effects primarily near edges during phase-slip events, using time-dependent Ginzburg-Landau theory.

Contribution

It introduces the impact of current-current interactions on kinematic vortices within the phase-slip regime, highlighting their transient nature and edge localization.

Findings

Current-current interaction effects are transient.

Maximum impact occurs near sample edges.

Influence is significant during vortex velocity peaks.

Abstract

Within the framework of time-dependent Ginzburg-Landau theory, we discuss an effect of the non-magnetic interaction between the normal current and the supercurrent in the phase-slip regime. The correction due to the current-current interaction is shown to have a transient character so that it contributes only as a system evolves. Numerical analyses for thin layers with no magnetic feedback show that the largest contribution of the current-current interaction appears near sample edges, where kinematic vortices reach maximum velocity.