Transport Through a Network of Topological Channels in Twisted Bilayer Graphene

Peter Rickhaus, John Wallbank, Sergey Slizovskiy, Riccardo Pisoni, Hiske Overweg, Yongjin Lee, Marius Eich, Ming Hao Liu, Kenji Watanabe, Takashi Taniguchi, Thomas Ihn, Klaus Ensslin

研究成果: Article同行評審

53 引文 斯高帕斯(Scopus)

摘要

We explore a network of electronic quantum valley Hall states in the moiré crystal of minimally twisted bilayer graphene. In our transport measurements, we observe Fabry-Pérot and Aharanov-Bohm oscillations that are robust in magnetic fields ranging from 0 to 8 T, which is in strong contrast to more conventional two-dimensional systems where trajectories in the bulk are bent by the Lorentz force. This persistence in magnetic field and the linear spacing in density indicate that charge carriers in the bulk flow in topologically protected, one-dimensional channels. With this work, we demonstrate coherent electronic transport in a lattice of topologically protected states.

原文English
頁(從 - 到)6725-6730
頁數6
期刊Nano letters
18
發行號11
DOIs
出版狀態Published - 2018 十一月 14

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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