Calculation and measurement of critical temperature in thin superconducting multilayers

TL;DR

This paper uses the Usadel equations to calculate the critical temperature of thin-film superconducting multilayers, extending the model to multilayers and validating it with experimental data from Ti-Al bilayers.

Contribution

It introduces an extended theoretical model for multilayer superconductors and demonstrates its accuracy with experimental validation.

Findings

Model accurately predicts critical temperature in multilayers.

Excellent fit with experimental data from Ti-Al bilayers.

Extension from bilayer to multilayer systems achieved.

Abstract

We have applied the Usadel equations to thin-film multilayer superconductors, and have calculated the critical temperature for general thin-film S-S' bilayer. We extended the bilayer calculation to general thin-film multilayers. The model demonstrates excellent fit with experimental data obtained from Ti-Al bilayers of varying thicknesses.