CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Band Structures of Ultrathin Bi(110) Films on Black Phosphorus Substrates Using Angle-Resolved Photoemission Spectroscopy |
Sailong Ju1, Maokun Wu2, Hao Yang3, Naizhou Wang4, Yingying Zhang1, Peng Wu1, Pengdong Wang1, Bo Zhang1, Kejun Mu1, Yaoyi Li3, Dandan Guan3, Dong Qian3, Feng Lu2, Dayong Liu5, Wei-Hua Wang2**, Xianhui Chen4, Zhe Sun** |
1National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 2Department of Electronic Science and Engineering, and Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, Nankai University, Tianjin 300071 3Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 4Hefei National Laboratory for Physical Science at Microscale and Department of Physics, and Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026 5Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
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Cite this article: |
Sailong Ju, Maokun Wu, Hao Yang et al 2018 Chin. Phys. Lett. 35 077102 |
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Abstract The band structures of two-monolayer Bi(110) films on black phosphorus substrates are studied using angle-resolved 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.
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Received: 04 April 2018
Published: 24 June 2018
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PACS: |
71.70.Ej
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(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
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73.20.At
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(Surface states, band structure, electron density of states)
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79.60.Dp
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(Adsorbed layers and thin films)
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Fund: 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, and the Initiative Scientific Research Program of Shanghai Jiao Tong University. |
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