期刊
SCIENCE ADVANCES
卷 5, 期 12, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aay8897
关键词
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资金
- EU Graphene Flagship Project [CNECTICT-604391]
- European Research Council Synergy Grant Hetero2D
- Royal Society
- EPSRC [EP/S019367/1, EP/S030719/1, EP/N010345/1]
- U.S. Army Research Office [W911NF-16-1-0279]
- FLAG-ERA project TRANS2DTMD
- RFBR [17-02-01129a]
- EPSRC Early Career Fellowship [EP/N007131/1]
- Flemish Science Foundation (FWO)
- Marie Sklodowska-Curie grant [751883]
- EPSRC [EP/P025021/1, EP/N007131/1, EP/N010345/1, EP/K005014/1, EP/S019367/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [751883] Funding Source: Marie Curie Actions (MSCA)
When two-dimensional (2D) atomic crystals are brought into close proximity to form a van der Waals heterostructure, neighbouring crystals may influence each other's properties. Of particular interest is when the two crystals closely match and a moire pattern forms, resulting in modified electronic and excitonic spectra, crystal reconstruction, and more. Thus, moire patterns are a viable tool for controlling the properties of 2D materials. However, the difference in periodicity of the two crystals limits the reconstruction and, thus, is a barrier to the low-energy regime. Here, we present a route to spectrum reconstruction at all energies. By using graphene which is aligned to two hexagonal boron nitride layers, one can make electrons scatter in the differential moire pattern which results in spectral changes at arbitrarily low energies. Further, we demonstrate that the strength of this potential relies crucially on the atomic reconstruction of graphene within the differential moire super cell.
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