Torsional periodic lattice distortions and diffraction of twisted 2D materials

Suk Hyun Sung; Yin Min Goh; Hyobin Yoo; Rebecca Engelke; Hongchao Xie; Kuan Zhang; Zidong Li; Andrew Ye; Parag B. Deotare; Ellad B. Tadmor; Andrew J. Mannix; Jiwoong Park; Liuyan Zhao; Philip Kim; Robert Hovden

doi:10.1038/s41467-022-35477-x

Nature Communications (Dec 2022)

Torsional periodic lattice distortions and diffraction of twisted 2D materials

Suk Hyun Sung,
Yin Min Goh,
Hyobin Yoo,
Rebecca Engelke,
Hongchao Xie,
Kuan Zhang,
Zidong Li,
Andrew Ye,
Parag B. Deotare,
Ellad B. Tadmor,
Andrew J. Mannix,
Jiwoong Park,
Liuyan Zhao,
Philip Kim,
Robert Hovden

Affiliations

Suk Hyun Sung: Department of Materials Science and Engineering, University of Michigan
Yin Min Goh: Department of Physics, University of Michigan
Hyobin Yoo: Department of Physics, Sogang University
Rebecca Engelke: Department of Physics, Harvard University
Hongchao Xie: Department of Physics, University of Michigan
Kuan Zhang: Aerospace Engineering and Mechanics, University of Minnesota
Zidong Li: Electrical and Computer Engineering Department, University of Michigan
Andrew Ye: Pritzker School of Molecular Engineering, University of Chicago
Parag B. Deotare: Electrical and Computer Engineering Department, University of Michigan
Ellad B. Tadmor: Aerospace Engineering and Mechanics, University of Minnesota
Andrew J. Mannix: Department of Materials Science and Engineering, Stanford University
Jiwoong Park: Pritzker School of Molecular Engineering, University of Chicago
Liuyan Zhao: Department of Physics, University of Michigan
Philip Kim: Department of Physics, Harvard University
Robert Hovden: Department of Materials Science and Engineering, University of Michigan

DOI: https://doi.org/10.1038/s41467-022-35477-x
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 8

Abstract

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In twisted 2D materials, spontaneous lattice reconstructions mean that twist angle alone provides an incomplete description. Here, using electron diffraction, the authors show that the displacement field in twisted bilayer graphene can be described as a superposition of three periodic lattice distortion (PLD) waves with wavevectors oriented at 120° from each other, forming a “torsional" PLD.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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