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Remote gate control of topological transitions in moire superlattices via cavity vacuum fields.

ABSTRACT: Placed in cavity resonators with three-dimensionally confined electromagnetic wave, the interaction between quasiparticles in solids can be induced by exchanging virtual cavity photons, which can have a nonlocal characteristic. Here, we investigate the possibility of utilizing this nonlocality to realize the remote control of the topological transition in mesoscopic moiré superlattices at full filling (one electron/hole per supercell) embedded in a split-ring terahertz electromagnetic resonator. We show that gate tuning one moiré superlattice can remotely drive a topological band inversion in another moiré superlattice not in contact but embedded in the same cavity. Our study of remote on/off switching of a topological transition provides a paradigm for the control of material properties via cavity vacuum fields.

SUBMITTER: Lin Z

PROVIDER: S-EPMC10410769 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature

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Remote gate control of topological transitions in moiré superlattices via cavity vacuum fields.

Lin Zuzhang Z Xiao Chengxin C Nguyen Danh-Phuong DP Arwas Geva G Ciuti Cristiano C Yao Wang W

Proceedings of the National Academy of Sciences of the United States of America 20230801 32

Placed in cavity resonators with three-dimensionally confined electromagnetic wave, the interaction between quasiparticles in solids can be induced by exchanging virtual cavity photons, which can have a nonlocal characteristic. Here, we investigate the possibility of utilizing this nonlocality to realize the remote control of the topological transition in mesoscopic moiré superlattices at full filling (one electron/hole per supercell) embedded in a split-ring terahertz electromagnetic resonator. ...[more]

PMID: 37527343

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