1. Semimetal Na3Bi Thin Film Grown on Double-Layer Graphene by Molecular Beam Epitaxy.
- Author
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Wen Jing, Guo Hua, Wang Zhen-Yu, Chang Kai, Deng Peng, Zhang Teng, Ji Shuai-Hua, Chen Xi, Xue Qi-Kun, Yan Chen-Hui, Zhang Zhi-Dong, Wang Li-Li, He Ke, and Ma Xu-Cun
- Subjects
GRAPHENE ,MOLECULAR beam epitaxy ,THIN films ,SUBSTRATES (Materials science) ,PHYSICS research - Abstract
Atomically flat thin films of topological semimetal Na
3 Bi are grown on double-layer graphene formed on 6H–SiC(0001) substrates by molecular beam epitaxy. By combined techniques of molecular beam epitaxy, scanning tunneling microscopy and angle resolved photoelectron spectroscopy, the growth conditions for Na3 Bi thin films on double-layer graphene are successfully established. The band structure of Na3 Bi grown on graphene is mapped along Γ̄–M̄ and Γ̄–K̄ directions. Furthermore, the energy band of Na3 Bi at higher energy is uncovered by doping Cs atoms on the surface. [ABSTRACT FROM AUTHOR]- Published
- 2014
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