Proximity Effect in Periodic Arrays of Superconducting Nanoislands on Thin Graphite Layer

TL;DR

This study investigates the proximity effect in a structured array of superconducting W-Ga-C nanoislands on thin graphite, revealing how superconductivity influences the underlying material's electrical properties.

Contribution

It provides experimental evidence of the proximity effect in a regular nanoisland array on graphite, using resistance and magnetoresistance measurements.

Findings

Proximity effect observed in nanoisland-graphite structure.

Superconducting nanoislands alter resistance and magnetoresistance.

Experimental validation of superconducting influence on graphite.

Abstract

The regular structure of superconducting nanoislands of alloy W-Ga-C was fabricated on nanothin graphite using focused ion beam. The resistance vs temperature dependence down to 1.7K and the magnetoresistance in field up to 24T were measured both for the bridge containing nanoislands and for the reference bridge without islands. The difference between those measurements demonstrates the proximity effect on a regular structure of superconducting W-Ga-C nanoislands on nanothin graphite layer.