The Impact of Short-Range (Gaussian) Disorder Correlations on Superconducting Characteristics

Author:

Neverov Vyacheslav D.12ORCID,Lukyanov Alexander E.12ORCID,Krasavin Andrey V.12ORCID,Vagov Alexei2ORCID,Croitoru Mihail D.23ORCID

Affiliation:

1. Department of Solid State Physics and Nanosystems, National Research Nuclear University MEPhI, Moscow 115409, Russia

2. Centre for Quantum Metamaterials, National Research University Higher School of Economics, Moscow 101000, Russia

3. Departamento de Física, Centro de Ciências Exatas e da Natureza, Universidade Federal de Pernambuco, Recife 50740-560, Brazil

Abstract

The pursuit of enhanced superconducting device performance has historically focused on minimizing disorder in materials. Recent research, however, challenges this conventional wisdom by exploring the unique characteristics of disordered materials. Following the studies, disorder is currently viewed as a design parameter that can be tuned. This shift in the paradigm has sparked an upsurge in research efforts, which demonstrates that disorder can significantly augment the superconductivity figures of merit. While almost all previous studies attended to the effects related to disorder strength, this article focuses on the impact of short-range disorder correlations that in real materials takes place, for example, due to lattice defects. The study shows that the degree of such correlations can strongly influence the superconducting characteristics.

Funder

Ministry of Science and Higher Education of the Russian Federation

MEPhI Program Priority 2030

HSE University Basic Research Program

RSF

Publisher

MDPI AG

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