Robust helical edge transport at ν=0 quantum Hall state

G. M. Gusev, D. A. Kozlov, A. D. Levin, Z. D. Kvon, N. N. Mikhailov, S. A. Dvoretsky

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Among the most interesting predictions in two-dimensional materials with a Dirac cone is the existence of the zeroth Landau level (LL), equally filled by electrons and holes with opposite chirality. The gapless edge states with helical spin structure emerge from Zeeman splitting at the LL filling factor ν=0 gapped quantum Hall (QH) state. We present observations of a giant, nonlocal, four-terminal transport in zero-gap HgTe quantum wells at the ν=0 QH state. Our experiment clearly demonstrates the existence of the robust helical edge state in a system with single-valley Dirac cone materials.

Original languageEnglish
Article number045304
Number of pages5
JournalPhysical Review B
Volume96
Issue number4
DOIs
Publication statusPublished - 21 Jul 2017

Keywords

  • BILAYER GRAPHENE
  • BERRYS PHASE

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