TY - JOUR

T1 - Robust helical edge transport at ν=0 quantum Hall state

AU - Gusev, G. M.

AU - Kozlov, D. A.

AU - Levin, A. D.

AU - Kvon, Z. D.

AU - Mikhailov, N. N.

AU - Dvoretsky, S. A.

PY - 2017/7/21

Y1 - 2017/7/21

N2 - 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.

AB - 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.

KW - BILAYER GRAPHENE

KW - BERRYS PHASE

UR - http://www.scopus.com/inward/record.url?scp=85026408871&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.96.045304

DO - 10.1103/PhysRevB.96.045304

M3 - Article

AN - SCOPUS:85026408871

VL - 96

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 4

M1 - 045304

ER -