Stripe phases in WSe2/WS2 moiré superlattices
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 superlattice...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2022
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| Online Access: | https://hdl.handle.net/1721.1/141840 |
| _version_ | 1811071444993441792 |
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| author | Jin, Chenhao Tao, Zui Li, Tingxin Xu, Yang Tang, Yanhao Zhu, Jiacheng Liu, Song Watanabe, Kenji Taniguchi, Takashi Hone, James C Fu, Liang Shan, Jie Mak, Kin Fai |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Jin, Chenhao Tao, Zui Li, Tingxin Xu, Yang Tang, Yanhao Zhu, Jiacheng Liu, Song Watanabe, Kenji Taniguchi, Takashi Hone, James C Fu, Liang Shan, Jie Mak, Kin Fai |
| author_sort | Jin, Chenhao |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T08:51:04Z |
| format | Article |
| id | mit-1721.1/141840 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:51:04Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1418402023-03-28T19:35:44Z Stripe phases in WSe2/WS2 moiré superlattices Jin, Chenhao Tao, Zui Li, Tingxin Xu, Yang Tang, Yanhao Zhu, Jiacheng Liu, Song Watanabe, Kenji Taniguchi, Takashi Hone, James C Fu, Liang Shan, Jie Mak, Kin Fai Massachusetts Institute of Technology. Department of Physics 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. 2022-04-12T12:23:57Z 2022-04-12T12:23:57Z 2021 2022-04-12T12:00:52Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141840 Jin, Chenhao, Tao, Zui, Li, Tingxin, Xu, Yang, Tang, Yanhao et al. 2021. "Stripe phases in WSe2/WS2 moiré superlattices." Nature Materials, 20 (7). en 10.1038/S41563-021-00959-8 Nature Materials 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. application/pdf Springer Science and Business Media LLC arXiv |
| spellingShingle | Jin, Chenhao Tao, Zui Li, Tingxin Xu, Yang Tang, Yanhao Zhu, Jiacheng Liu, Song Watanabe, Kenji Taniguchi, Takashi Hone, James C Fu, Liang Shan, Jie Mak, Kin Fai Stripe phases in WSe2/WS2 moiré superlattices |
| title | Stripe phases in WSe2/WS2 moiré superlattices |
| title_full | Stripe phases in WSe2/WS2 moiré superlattices |
| title_fullStr | Stripe phases in WSe2/WS2 moiré superlattices |
| title_full_unstemmed | Stripe phases in WSe2/WS2 moiré superlattices |
| title_short | Stripe phases in WSe2/WS2 moiré superlattices |
| title_sort | stripe phases in wse2 ws2 moire superlattices |
| url | https://hdl.handle.net/1721.1/141840 |
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