Nanowire Acting as a Superconducting Quantum Interference Device

TL;DR

This paper reports experimental observations of magneto-transport oscillations in amorphous Indium-Oxide nanowires, demonstrating behavior similar to superconducting quantum interference devices, revealing potential for nanoscale quantum sensing.

Contribution

The study provides the first experimental evidence of SQUID-like oscillations in amorphous nanowires, expanding understanding of quantum interference effects in nanoscale superconductors.

Findings

Reproducible resistance oscillations observed below superconducting transition.

Oscillations are similar to those in traditional SQUIDs.

Nanowires exhibit quantum interference effects at nanoscale.

Abstract

We present the results from an experimental study of the magneto-transport of superconducting wires of amorphous Indium-Oxide, having widths in the range 40 - 120 nm. We find that, below the superconducting transition temperature, the wires exhibit clear, reproducible, oscillations in their resistance as a function of magnetic field. The oscillations are reminiscent of those which underlie the operation of a superconducting quantum interference device.