Robust helical edge transport at quantum Hall state
arXiv:1707.07555 · doi:10.1103/PhysRevB.96.045304
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 gapped quantum Hall state. We present observations of a giant nonlocal four-terminal transport in zero-gap HgTe quantum wells at the quantum Hall state. Our experiment clearly demonstrates the existence of the robust helical edge state in a system with single valley Dirac cone materials.
arXiv comment9 pages, 8 figures
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Cited by in corpus (13)
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- Quantum Hall effect and Landau levels in the 3D topological insulator HgTe
- Engineering topological phases in triple HgTe/CdTe quantum wells
- Transport through the network of topological channels in HgTe based quantum well
- Multiple crossing of Landau levels of two-dimensional fermions in double HgTe quantum wells
- Thermoelectric response and entropy of fractional quantum Hall systems
- Interaction dominated transport in 2D conductors: from degenerate to partially-degenerate regime
- Scattering anisotropy in HgTe (013) quantum well
- Interaction-controlled transport in a two-dimensional massless-massive Dirac system: Transition from degenerate to nondegenerate regimes
- Quantum transport of Dirac fermions in HgTe gapless quantum wells
- Magnetotransport in a 2D Hybrid Band System: Dirac and Heavy Hole Interplay
- Interaction Induced Magnetotransport in a 2D Dirac-Heavy Hole Hybrid Band System
- Interactions-controlled magnetotransport in two-dimensional massless-massive fermion mixtures