期刊
APPLIED PHYSICS LETTERS
卷 107, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4931390
关键词
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资金
- Ministry of Science and Technology of China [2013CB921902, 2012CB927401, 2011CB922202]
- NSFC [11227404, 11274228, 11174199, 11374206, 11134008, 91421312, 91221302, 11574202]
- Shanghai Committee of Science and Technology, China [12JC1405300, 13QH1401500, 15JC1402300]
- Top-notch Young Talents Program
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Shu Guang project by the Shanghai Municipal Education Commission
- Shanghai Education Development Foundation
Ultra-thin Bi films show exotic electronic structure and novel quantum effects, especially the widely studied Bi (111) film. Using reflection high-energy electron diffraction and scanning tunneling microscopy, we studied the structure and morphology evolution of Bi (111) thin films grown on Bi2Se3. A strongly compressed, but quickly released in-plane lattice of Bi (111) is found in the first three bilayers. The first bilayer of Bi shows a fractal growth mode with flat surface, while the second and third bilayer show a periodic buckling due to the strong compression of the in-plane lattice. The lattice slowly changes to its bulk value with further deposition of Bi. (C) 2015 AIP Publishing LLC.
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