# Quantum magnetoresistive (hc/2e)/m periodic oscillations in a superconducting ring

## TL;DR

This paper reports on the observation of modified quantum magnetoresistive oscillations in a superconducting ring, where harmonic components emerge with changing temperature and current, possibly due to multiple Andreev reflection.

## Contribution

It introduces the experimental finding of harmonic oscillation modifications in superconducting rings, suggesting a new understanding of quantum interference effects.

## Key findings

- Observation of harmonic (hc/2e)/m oscillations
- Modification of Little-Parks oscillations with temperature and current
- Possible link to multiple Andreev reflection phenomena

## Abstract

It was experimentally found that quantum magnetoresistive hc/2e periodic oscillations of the Little-Parks type in a superconducting mesoscopic ring with decreasing temperature and increasing applied dc current are modified to the sum of harmonic (hc/2e)/m periodic oscillations. Multiple Andreev reflection can be a possible cause of this effect.