摘要
The band structures of two-monolayer Bi（110） films on black phosphorus substrates are studied using angleresolved photoemission spectroscopy. Within the band gap of bulk black phosphorus, the electronic states near the Fermi level are dominated by the Bi（110） film. The band dispersions revealed by our data suggest that the orientation of the Bi（110） film is aligned with the black phosphorus substrate. The electronic structures of the Bi（110） film strongly deviate from the band calculations of the free-standing Bi（110） film, suggesting that the substrate can significantly affect the electronic states in the Bi（110） film. Our data show that there are no non-trivial electronic states in Bi（110） films grown on black phosphorus substrates.
The band structures of two-monolayer Bi（110） films on black phosphorus substrates are studied using angleresolved photoemission spectroscopy. Within the band gap of bulk black phosphorus, the electronic states near the Fermi level are dominated by the Bi（110） film. The band dispersions revealed by our data suggest that the orientation of the Bi（110） film is aligned with the black phosphorus substrate. The electronic structures of the Bi（110） film strongly deviate from the band calculations of the free-standing Bi（110） film, suggesting that the substrate can significantly affect the electronic states in the Bi（110） film. Our data show that there are no non-trivial electronic states in Bi（110） films grown on black phosphorus substrates.
基金
Supported by National Key R&D Program of China under Grant Nos 2017YFA0402901,2016YFA0401004 and 2016YFB0901600
the National Natural Science Foundation of China under Grant Nos 11534010,11404172,U1532136,U1632102,U1632272,11574201,11674296 and 11190022
the National Basic Research Program of China under Grant No 2014CB921102
the Key Research Program of the Chinese Academy of Sciences under Grant Nos QYZDY-SSW-SLH021 and XDPB01
the Interdisciplinary Innovation Team of Chinese Academy of Sciences
the Initiative Scientific Research Program of Shanghai Jiao Tong University
