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Condens. Matter 2018, 3(1), 8;

The BKT Universality Class in the Presence of Correlated Disorder

ISC-CNR, Department of Physics, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
Author to whom correspondence should be addressed.
Received: 30 January 2018 / Revised: 5 March 2018 / Accepted: 6 March 2018 / Published: 9 March 2018
(This article belongs to the Special Issue Proceedings of the conference SuperFluctuations 2017)
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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. View Full-Text
Keywords: BKT transition; disordered XY model; 2D superconductors BKT transition; disordered XY model; 2D superconductors

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Maccari, I.; Benfatto, L.; Castellani, C. The BKT Universality Class in the Presence of Correlated Disorder. Condens. Matter 2018, 3, 8.

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