Anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorene heterostructures
- Tsinghua Univ., Beijing (China). Tsinghua-Berkeley Shenzhen Inst.; Univ. of California, Berkeley, CA (United States). Dept. of Physics
- Tsinghua Univ., Beijing (China). Tsinghua-Berkeley Shenzhen Inst.
- Technische Univ. Muenchen, Garching (Germany). Dept. of Chemistry
- Fudan Univ., Shanghai (China). Dept. of Physics. State Key Lab. of Surface Physics
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Peking Univ., Beijing (China). International Center for Quantum Materials. School of Physics. Electron Microscopy Lab.
- National Inst. for Materials Science, Tsukuba (Japan)
- Peking Univ., Beijing (China). International Center for Quantum Materials. School of Physics. Electron Microscopy Lab.; Collaborative Innovation Center of Quantum Matter, Beijing (China)
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Kavli Energy NanoSciences Inst.
Moiré superlattices of van der Waals heterostructures provide a powerful way to engineer electronic structures of two-dimensional materials. Many novel quantum phenomena have emerged in graphene and transition metal dichalcogenide moiré systems. Twisted phosphorene offers another attractive system to explore moiré physics because phosphorene features an anisotropic rectangular lattice, different from isotropic hexagonal lattices previously reported. Here we report emerging anisotropic moiré optical transitions in twisted monolayer/bilayer phosphorenes. The optical resonances in phosphorene moiré superlattice depend sensitively on twist angle and are completely different from those in the constitute monolayer and bilayer phosphorene even for a twist angle as large as 19°. Our calculations reveal that the Γ-point direct bandgap and the rectangular lattice of phosphorene give rise to the remarkably strong moiré physics in large-twist-angle phosphorene heterostructures. This work highlights fresh opportunities to explore moiré physics in phosphorene and other van der Waals heterostructures with different lattice configurations.
- Sponsoring Organization:
- USDOE Office of Science (SC); National Key Research and Development Program of China; Bureau of Industry and Information Technology of Shenzhen; National Natural Science Foundation of China (NSFC); Shenzhen Basic Research Projects; Guangdong Innovative and Entrepreneurial Research Team Program; Shanghai Municipal Science and Technology Commission; Chinese Academy of Sciences (CAS)
- Grant/Contract Number:
- AC02-05CH11231; 2018YFA0307200; 51722206; 51920105002; 201901171523; 2017YFB0701600; 11974197; JCYJ20170407155608882L 2017ZT07C341; 2016YFA0300703; 2018YFA0305600; U1732274; 11527805; 11421404; XDB30000000; JPMJCR15F3
- OSTI ID:
- 1815927
- Journal Information:
- Nature Communications, Vol. 12, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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