期刊
ACS APPLIED NANO MATERIALS
卷 4, 期 3, 页码 2351-2356出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c03221
关键词
stanene; Xenes; molecular beam epitaxy; optical spectroscopy; absorption coefficient
资金
- EU [772261]
- Italian Ministry of Foreign Affairs [PGR00772]
- International Cooperation (MAECI) [PGR00772]
The optical properties of tin nanosheets deposited on Al2O3(0001) were investigated, showing stanene-like properties. These findings demonstrate the appealing optical properties of 2D tin in a broad range of the electromagnetic spectrum.
Stanene is one of the most intriguing two-dimensional (2D) materials because of its nontrivial topological properties. Here, the optical properties from THz to UV of molecular beam deposited tin nanosheets on Al2O3(0001) are reported. The experimental absorption coefficient cannot be described in terms of metallic tin or tin oxides. Nonetheless, a similar optical behavior was predicted by theory for freestanding stanene, thus suggesting the formation of the 2D tin nanosheets with stanene-like properties. These findings show that 2D tin bears appealing optical properties in a broad range of the electromagnetic spectrum, thus paving the way to Xenes-based nanophotonics.
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