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Tunable Moiré Superlattice of Artificially Twisted Monolayers
Author(s) -
Chen PoYen,
Zhang XinQuan,
Lai YingYu,
Lin ErhChen,
Chen ChunAn,
Guan SyuYou,
Chen JyunJyun,
Yang ZheHong,
Tseng YuWen,
Gwo Shangjr,
Chang ChiaSeng,
Chen LihJuann,
Lee YiHsien
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201901077
Subject(s) - materials science , superlattice , moiré pattern , monolayer , nanotechnology , optoelectronics , optics , physics
Twisting between two stacked monolayers modulates periodic potentials and forms the Moiré electronic superlattices, which offers an additional degree of freedom to alter material property. Considerable unique observations, including unconventional superconductivity, coupled spin‐valley states, and quantized interlayer excitons are correlated to the electronic superlattices but further study requires reliable routes to study the Moiré in real space. Scanning tunneling microscopy (STM) is ideal to precisely probe the Moiré superlattice and correlate coupled parameters among local electronic structures, strains, defects, and band alignment at atomic scale. Here, a clean route is developed to construct twisted lattices using synthesized monolayers for fundamental studies. Diverse Moiré superlattices are predicted and successfully observed with STM at room temperature. Electrical tuning of the Moiré superlattice is achieved with stacked TMD on graphite.