Nature Communications (Sep 2022)

Determination of topological edge quantum numbers of fractional quantum Hall phases by thermal conductance measurements

  • Saurabh Kumar Srivastav,
  • Ravi Kumar,
  • Christian Spånslätt,
  • K. Watanabe,
  • T. Taniguchi,
  • Alexander D. Mirlin,
  • Yuval Gefen,
  • Anindya Das

DOI
https://doi.org/10.1038/s41467-022-32956-z
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 8

Abstract

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The knowledge of quantum numbers of the edge modes is essential for understanding fractional Hall states containing counter-propagating downstream and upstream modes. Here the authors identify the edge quantum numbers by probing a crossover from non-equilibrated to equilibrated edge mode regime in thermal conductance.