Multiple Current States of Two Phase-Coupled Superconducting Rings

TL;DR

This paper investigates the multiple current states in two phase-coupled superconducting rings, combining experimental observations with calculations to interpret energy states and transition probabilities influenced by noise.

Contribution

It introduces a detailed analysis of multiple current states in coupled superconducting rings and links experimental results with theoretical energy state calculations.

Findings

Multiple current states depend on magnetic field

Critical current measurements reveal energy state distributions

Noise influences transition probabilities between states

Abstract

The states of two phase-coupled superconducting rings have been investigated. Multiple current states have been revealed in the dependence of the critical current on the magnetic field. The performed calculations of the critical currents and energy states in a magnetic field have made it possible to interpret the experiment as the measurement of energy states into which the system comes with different probabilities because of the equilibrium and non-equilibrium noises upon the transition from the resistive state to the superconducting state during the measurement of the critical current