Point-contact spectroscopy of superconductors in the nonequilibrium state

TL;DR

This paper investigates how superconductors near a point contact transition into a nonequilibrium state when a critical density of quasiparticles is reached, revealing new phase transition phenomena.

Contribution

It reports the observation of a phase transition into a nonequilibrium state in superconductors at a critical quasiparticle density near point contacts.

Findings

Identification of a phase transition into a nonequilibrium state

Critical quasiparticle density triggers the transition

New phenomena observed in superconductor point contacts

Abstract

A phase transition of the region of the superconductor near the point contact into a new nonequi- librium state at the critical density of nonequilibriumquasiparticles is observed.