Strongly compressed Bi (111) bilayer films on Bi2Se3 studied by scanning tunneling microscopy
Strongly compressed Bi (111) bilayer films on Bi2Se3 studied by scanning tunneling microscopy
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通过扫描隧道显微镜研究 Bi2Se3 上的强压缩 Bi (111) 双层薄膜
DOI:
10.1063/1.4931390
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发表时间:
2015-09
影响因子:
4
通讯作者:
Jia, Jin-Feng
中科院分区:
文献类型:
--
作者:
Liu, Canhua;Qian, Dong;Gao, C. L.;Jia, Jin-Feng
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.
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