Quantum oscillations of the critical current of asymmetric superconducting rings and systems of the rings

TL;DR

This paper investigates quantum oscillations in the critical current of asymmetric superconducting rings, revealing shifts dependent on ring asymmetry and system configuration, with implications for understanding flux quantization.

Contribution

It demonstrates how asymmetry and system size influence quantum oscillation shifts in superconducting rings, providing new insights into flux quantization effects.

Findings

Shift direction depends on measurement orientation.

Shift magnitude varies with ring size and system configuration.

Smaller rings exhibit reduced shift values.

Abstract

The quantum oscillations in magnetic field of the critical current of asymmetric superconducting rings with different widths of the half-rings are shifted to opposite sides for measurement in the opposite direction. The value of this shift found before equal half of the flux quantum for single ring with radius 2 \mu m has smaller value at lower critical current and for system of the rings with smaller radius.