BKT universality class in the presence of correlated disorder

Ilaria Maccari; Lara Benfatto; Claudio Castellani

doi:10.3390/condmat3010008

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arXiv · 1802.03315

BKT universality class in the presence of correlated disorder

Ilaria Maccari·Lara Benfatto·Claudio Castellani

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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\cite{me} we have shown that the presence of spatially correlated disorder plays a key role in this sense being it 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, addressing specifically the issue whether it changes or not the BKT universality class.

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cond-mat.supr-con cond-mat.dis-nn cond-mat.stat-mech cond-mat.str-el

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Ilaria Maccari, Lara Benfatto, Claudio Castellani. 2018-02-09. BKT universality class in the presence of correlated disorder. https://doi.org/10.3390/condmat3010008

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