Broadening of the Berezinskii-Kosterlitz-Thouless transition by correlated disorder
Physical Review B, ISSN: 2469-9969, Vol: 96, Issue: 6
2017
- 27Citations
- 34Captures
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Article Description
The Berezinskii-Kosterlitz-Thouless (BKT) transition in two-dimensional superconductors is usually expected to be protected against disorder. However, its fingerprints in a real system, such as, e.g., the universal superfluid-density jump, are often at odds with this expectation. Here, we show that the disorder-induced granularity of the superconducting state modifies the nucleation mechanism for vortex-antivortex pairs. This leads to a considerable smearing of the universal superfluid-density jump as compared to the paradigmatic clean case, in agreement with experimental observations.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85028776769&origin=inward; http://dx.doi.org/10.1103/physrevb.96.060508; https://link.aps.org/doi/10.1103/PhysRevB.96.060508; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.96.060508/fulltext; https://link.aps.org/article/10.1103/PhysRevB.96.060508
American Physical Society (APS)
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