Stripe phases in WSe2/WS2 moiré superlattices
Name
2007.12068.pdf
Description
Submitted version
Size
1.36 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Jin, Chenhao
Tao, Zui
Li, Tingxin
Xu, Yang
Tang, Yanhao
Zhu, Jiacheng
Liu, Song
Watanabe, Kenji
Taniguchi, Takashi
Hone, James C
Date Issued
2021
Journal
Nature Materials
Publisher
Springer Science and Business Media LLC
Citation
Jin, Chenhao, Tao, Zui, Li, Tingxin, Xu, Yang, Tang, Yanhao et al. 2021. "Stripe phases in WSe2/WS2 moiré superlattices." Nature Materials, 20 (7).
Version
Original manuscript
Abstract
Stripe phases, in which the rotational symmetry of charge density is spontaneously broken, occur in many strongly correlated systems with competing interactions1-11. However, identifying and studying such stripe phases remains challenging. Here we uncover stripe phases in WSe2/WS2 moiré superlattices by combining optical anisotropy and electronic compressibility measurements. We find strong electronic anisotropy over a large doping range peaked at 1/2 filling of the moiré superlattice. The 1/2 state is incompressible and assigned to an insulating stripe crystal phase. Wide-field imaging reveals domain configurations with a preferential alignment along the high-symmetry axes of the moiré superlattice. Away from 1/2 filling, we observe additional stripe crystals at commensurate filling 1/4, 2/5 and 3/5, and compressible electronic liquid crystal states at incommensurate fillings. Our results demonstrate that two-dimensional semiconductor moiré superlattices are a highly tunable platform from which to study the stripe phases and their interplay with other symmetry breaking ground states.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1038/S41563-021-00959-8
