Realization of a Buckled Antimonene Monolayer on Ag(111) via Surface Engineering

The degree of buckling of two-dimensional (2D) materials can have a dramatic impact on their corresponding electronic structures. Antimonene (β-phase), a new 2D material with air stability and promising electronic properties, has been engineered to adopt flat or two-heights-buckling geometries by em...

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Published in:The journal of physical chemistry letters 2020-11, Vol.11 (21), p.8976-8982
Main Authors: Sun, Shuo, Yang, Tong, Luo, Yong Zheng, Gou, Jian, Huang, Yuli, Gu, Chengding, Ma, Zhirui, Lian, Xu, Duan, Sisheng, Wee, Andrew T. S, Lai, Min, Zhang, Jia Lin, Feng, Yuan Ping, Chen, Wei
Format: Article
Language:English
Subjects:
Physical Insights into Materials and Molecular Properties
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Summary:The degree of buckling of two-dimensional (2D) materials can have a dramatic impact on their corresponding electronic structures. Antimonene (β-phase), a new 2D material with air stability and promising electronic properties, has been engineered to adopt flat or two-heights-buckling geometries by employing different supporting substrates for epitaxial growth. However, studies of the antimonene monolayer with a more buckled configuration are still lacking. Here, we report the synthesis of an antimonene monolayer with a three-heights-buckling configuration overlaid on SbAg2 surface alloy-covered Ag(111) by molecular beam epitaxy, in which the underlying surface alloy provides interfacial interactions to modulate the structure of the antimonene monolayer. The atomic structure of the synthesized antimonene has been precisely identified through a combination of low-temperature scanning tunneling microscopy and density functional theory calculations. The successful fabrication of a buckled antimonene monolayer could provide a promising way to modulate the structures of 2D materials for future electronic and optoelectronic applications.
ISSN:1948-7185
1948-7185
DOI:10.1021/acs.jpclett.0c02637