Moiré patterns in van der Waals heterostructures

Maxime Le Ster, Tobias Maerkl, Pawel J. Kowalczyk, and Simon A. Brown
Phys. Rev. B 99, 075422 – Published 15 February 2019

Abstract

Using scanning tunneling microscopy, we report the observation of moiré patterns (MPs) on van der Waals heterostructures comprised of various 2D allotropes of bismuth and antimony grown on highly ordered pyrolytic graphite and MoS2. The spatial periods of the MPs range from λ1 to 10 nm. For all the reported cases (α-bismuthene, α-antimonene, β-antimonene, and monolayer bismuthene), we model the observations using a simple superposition model (SSM). Where possible, the results obtained from the SSM are compared to analytical prediction. MPs emerging from mixed symmetry stacking (hexagonal on rectangular) are explained without requiring commensuration of the layers.

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  • Received 21 December 2018

DOI:https://doi.org/10.1103/PhysRevB.99.075422

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Maxime Le Ster1, Tobias Maerkl1, Pawel J. Kowalczyk2, and Simon A. Brown1,*

  • 1The MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
  • 2Department of Solid State Physics, Faculty of Physics and Applied Informatics, University of Lodz, 90-236 Lodz, Pomorska 149/153, Poland

  • *Corresponding author: simon.brown@canterbury.ac.nz

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Vol. 99, Iss. 7 — 15 February 2019

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