The BKT Universality Class in the Presence of Correlated Disorder

2018/02/09 by Ilaria Maccari, Lara Benfatto, Claudio Castellani +1 · 1 citation
Mathematics · Physics and Astronomy · #Condensed matter physics #Jump #Logistic regression #Mathematics #Odds #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #Quantum mechanics #Renormalization group #Statistical physics #Statistics #Superfluidity #Universality (dynamical systems) #cond-mat.dis-nn #cond-mat.stat-mech #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.3390/condmat3010008

The present paper has already been submitted as Special Issue "Proceedings of the conference SuperFluctuations 2017"

arxiv created 2018/02/09 · openalex publication_date 2018/03/09 · arxiv updated 2018/05/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The correct detection of the Berezinskii-Kosterlitz-Thouless (BKT) transition in quasi-two-dimensional superconductors still remains a controversial issue. Its main signatures, indeed, are often at odds with the theoretical expectations. In a recent work (Maccari, I.; Benfatto, L.; Castellani, C. Phys. Rev. B 2017, 96, 060508), we have shown that the presence of spatially correlated disorder plays a key role in this sense because it is the reason underlying the experimentally-observed smearing of the universal superfluid-density jump. In the present paper we closely investigate the effects of correlated disorder on the BKT transition, specifically addressing the issue of whether or not it changes the BKT universality class.

Citations

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Cited by

• Nonlinear I−V characteristics of two-dimensional superconductors: Berezinskii-Kosterlitz-Thouless physics versus inhomogeneity