Nature Communications (Feb 2019)

Intrinsic valley Hall transport in atomically thin MoS2

  • Zefei Wu,
  • Benjamin T. Zhou,
  • Xiangbin Cai,
  • Patrick Cheung,
  • Gui-Bin Liu,
  • Meizhen Huang,
  • Jiangxiazi Lin,
  • Tianyi Han,
  • Liheng An,
  • Yuanwei Wang,
  • Shuigang Xu,
  • Gen Long,
  • Chun Cheng,
  • Kam Tuen Law,
  • Fan Zhang,
  • Ning Wang

DOI
https://doi.org/10.1038/s41467-019-08629-9
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 8

Abstract

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Electrons hopping in two-dimensional honeycomb lattices possess a valley degree of freedom. Here, the authors observe room-temperature valley Hall transport without any extrinsic symmetry breaking in the non-centrosymmetric monolayer and trilayer MoS2 by purely electronic means, whereas no valley signal is detected for centrosymmetric bilayer MoS2.