The effect of alternating current on the current states of a quantum interferometer shunted by a superconducting inductance

TL;DR

This paper investigates how alternating current and magnetic fields influence the current states of a superconducting quantum interferometer with inductance, revealing new stationary states during resistive transitions.

Contribution

It introduces a novel discrete stationary state in a superconducting interferometer under combined AC and DC stimuli, expanding understanding of its current state behavior.

Findings

Reversible changes in critical current and current states were observed.

A new discrete stationary state was discovered during resistive transition.

The combined effect of AC and magnetic fields significantly alters the interferometer's behavior.

Abstract

The patterns of reversible changes in the critical current and discrete current states of a structure in the form of a superconducting quantum interferometer shunted by superconducting inductance, as a result of passing an alternating transport current through the structure and applying an external alternating magnetic field simultaneously with a direct transport current, was established. A new type of discrete stationary state was discovered during the transition of the interferometer to the resistive state caused by the combined action of direct and alternating transport currents.