Super Moiré of Controlled Stacked Monolayers

POSTER

Abstract

Moiré lattices have recently emerged as a highly promising platform for the exploration of quantum states and correlated physics.[1,2] The introduction of periodic Moiré potential within superlattices has the profound effect of modifying their electronic band structures, giving rise to novel quantum phenomena, notably Moiré excitons and Moiré phonons. In this study, a deeper Moiré potential is realized by controlled stacking of monolayers of transition metal dichalcogenides (TMDs) via chemical vapor deposition (CVD).

Our experimental findings have revealed the presence of multiple split super Moiré excitons within the twisted configuration at a high temperature of 120 K. This discovery not only offers an efficient approach to scalable Moiré studies but also unveils the potential for deeper Moiré phenomena, promising exciting prospects for the future exploration of quantum physics.



1. Du, Luojun, et al. "Moiré photonics and optoelectronics." Science 379.6639 (2023): eadg0014.

2. Huang, Di, et al. "Excitons in semiconductor moiré superlattices." Nature Nanotechnology 17.3 (2022): 227-238.

*We acknowledge support from AOARD grant (co-funded with ONRG) FA2386-16-1-4009, Ministry of Science and Technology (NSTC 111-2112-M-007 -027 -MY3, NSTC 109-2124-M-007 -001 -MY3, NSTC 108-2112-M-007-006-MY3, NSTC 107-2923-M-007-002-MY3, NSTC 106-2119-M-007-023-MY3, and NSTC 105-2112-M-007-032-MY3), and Academia Sinica Research Program on Nanoscience and Nanotechnology (AS-iMATE-107-11, AS-iMATE-109-11, and AS-iMATE-111-11). This work was partially supported by the "Frontier Research Center on Fundamental and Applied Sciences of Matters" and "Center for Quantum Technology" of National Tsing Hua University from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.

Publication: No

Presenters

  • Chun An Chen

    • National Tsing Hua University Inst of Physics Academia Sinica
    • National Tsing Hua University and Inst of Physics Academia Sinica

Authors

  • Chun An Chen

    • National Tsing Hua University Inst of Physics Academia Sinica
    • National Tsing Hua University and Inst of Physics Academia Sinica

  • Po-Yen Liu

    • Natl Taiwan Univ

  • Chung-Jen Chen

    • National Tsing Hua University

  • Guan-Yi Wu

    • National Tsing Hua University

  • Shangfan Lee

    • Academia Sinica
    • Inst of Physics Academia Sinica
    • Institute of Physics, Academia Sinica

  • Chia-Seng Chang

    • Inst of Physics Academia Sinica

  • Lih-Juann Chen

    • National Tsing Hua University

  • Yi-Hsien Lee

    • National Tsing Hua University