Cooper pairs at above-critical current region

TL;DR

This paper proposes that Cooper pairs may persist above the critical current in superconductors, challenging the traditional belief that they break apart, and suggests experimental ways to detect their presence through resistance measurements.

Contribution

It introduces the idea that Cooper pairs can exist above the critical current and provides a method to detect them via temperature-dependent resistance analysis.

Findings

Cooper pairs may survive above the critical current.

Dissipation is caused by scattering of these pairs.

Resistance measurements can reveal their existence.

Abstract

It is generally believed that in a superconducor Cooper pairs are broken at above-critical current region, corresponding to the lost of superconductivity. We suggest that, under some circumstance, Cooper pairs could still exist above critical current, and that dissipation of the system is caused by the scattering of these pairs. The existence of Cooper pairs in this region can be revealed by investigating the temperature dependence of the electrical resistance.