The discovery and design of two-dimensional (2D) materials has aided the development of novel nanoscale devices for various applications. Here, we show the structural, electronic, and vibrational properties of 15 2D materials based on Janus substitution (atomic layer substitution) of group IV monochalcogenides. Although group IV monochalcogenides have already been extensively studied because of their very promising piezoelectric and thermoelectric properties, these Janus materials appear as potential candidates for similar applications but with a broken symmetry that can enrich their electronic and optical properties and the coupling of these with other physical properties. Based on first-principles calculations, we investigate the stability of the Janus materials according to energetic, dynamical, and mechanical criteria. Understanding of the physical properties of these 2D materials can provide guidance for the development of novel nanoscale electronic devices.
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28 July 2020
Research Article|
July 29 2020
Janus two-dimensional materials based on group IV monochalcogenides
Special Collection:
Beyond Graphene: Low Symmetry and Anisotropic 2D Materials
Leandro Seixas
Leandro Seixas
a)
MackGraphe—Graphene and Nanomaterials Research Center, Mackenzie Presbyterian University
, Rua da Consolação 896, São Paulo, SP 01302-907, Brazil
and School of Engineering, Mackenzie Presbyterian University
, Rua da Consolação 896, São Paulo, SP 01302-907, Brazil
a)Author to whom correspondence should be addressed: leandro.seixas@mackenzie.br
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a)Author to whom correspondence should be addressed: leandro.seixas@mackenzie.br
Note: This paper is part of the Special Topic on Beyond Graphene: Low Symmetry and Anisotropic 2D Materials.
J. Appl. Phys. 128, 045115 (2020)
Article history
Received:
April 30 2020
Accepted:
July 17 2020
Citation
Leandro Seixas; Janus two-dimensional materials based on group IV monochalcogenides. J. Appl. Phys. 28 July 2020; 128 (4): 045115. https://doi.org/10.1063/5.0012427
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