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Updated: Jul 11, 2025

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Sharpness of the Berezinskii-Kosterlitz-Thouless Transition in Disordered NbN Films

Alexander Weitzel1, Lea Pfaffinger1, Ilaria Maccari2

  • 1Institute for Experimental and Applied Physics, University of Regensburg, D-93040 Regensburg, Germany.

Physical Review Letters
|November 17, 2023
PubMed
Summary

We investigated the Berezinskii-Kosterlitz-Thouless transition in disordered NbN films. Our findings show a sharp transition, challenging previous ideas about broadening in such superconductors.

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