Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers
While transition-metal dichalcogenide (TMD)–based moir ́e mate-rials have been shown to host various correlated electronicphenomena, topological states have not been experimentallyobserved until now [T. Li et al., Quantum anomalous Halleffect from intertwined moir...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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National Academy of Sciences
2022
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| Online Access: | https://hdl.handle.net/1721.1/141859.2 |
| _version_ | 1811082271775522816 |
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| author | Zhang, Yang Devakul, Trithep Fu, Liang |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Zhang, Yang Devakul, Trithep Fu, Liang |
| author_sort | Zhang, Yang |
| collection | MIT |
| description | While transition-metal dichalcogenide (TMD)–based moir ́e mate-rials have been shown to host various correlated electronicphenomena, topological states have not been experimentallyobserved until now [T. Li et al., Quantum anomalous Halleffect from intertwined moir ́e bands. arXiv [Preprint] (2021).https://arxiv.org/abs/2107.01796 (Accessed 5 July 2021)]. In thiswork, using first-principle calculations and continuum modeling,we reveal the displacement field–induced topological moir ́e bandsin AB-stacked TMD heterobilayer MoTe2/WSe2. Valley-contrastingChern bands with nontrivial spin texture are formed from inter-layer hybridization between MoTe2and WSe2bands of nominallyopposite spins. Our study establishes a recipe for creating topo-logical bands in AB-stacked TMD bilayers in general, which pro-vides a highly tunable platform for realizing quantum-spin Halland interaction-induced quantum anomalous Hall effects |
| first_indexed | 2024-09-23T12:00:28Z |
| format | Article |
| id | mit-1721.1/141859.2 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:00:28Z |
| publishDate | 2022 |
| publisher | National Academy of Sciences |
| record_format | dspace |
| spelling | mit-1721.1/141859.22024-06-04T19:58:55Z Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers Zhang, Yang Devakul, Trithep Fu, Liang Massachusetts Institute of Technology. Department of Physics While transition-metal dichalcogenide (TMD)–based moir ́e mate-rials have been shown to host various correlated electronicphenomena, topological states have not been experimentallyobserved until now [T. Li et al., Quantum anomalous Halleffect from intertwined moir ́e bands. arXiv [Preprint] (2021).https://arxiv.org/abs/2107.01796 (Accessed 5 July 2021)]. In thiswork, using first-principle calculations and continuum modeling,we reveal the displacement field–induced topological moir ́e bandsin AB-stacked TMD heterobilayer MoTe2/WSe2. Valley-contrastingChern bands with nontrivial spin texture are formed from inter-layer hybridization between MoTe2and WSe2bands of nominallyopposite spins. Our study establishes a recipe for creating topo-logical bands in AB-stacked TMD bilayers in general, which pro-vides a highly tunable platform for realizing quantum-spin Halland interaction-induced quantum anomalous Hall effects 2022-06-15T14:10:15Z 2022-04-12T15:30:20Z 2022-06-15T14:10:15Z 2021-09 2021-07 2022-04-12T15:19:06Z Article http://purl.org/eprint/type/JournalArticle 0027-8424 1091-6490 https://hdl.handle.net/1721.1/141859.2 Zhang, Yang, Devakul, Trithep and Fu, Liang. 2021. "Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers." Proceedings of the National Academy of Sciences of the United States of America, 118 (36). en http://dx.doi.org/10.1073/pnas.2112673118 Proceedings of the National Academy of Sciences 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/octet-stream National Academy of Sciences PNAS |
| spellingShingle | Zhang, Yang Devakul, Trithep Fu, Liang Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers |
| title | Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers |
| title_full | Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers |
| title_fullStr | Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers |
| title_full_unstemmed | Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers |
| title_short | Spin-textured Chern bands in AB-stacked transition metal dichalcogenide bilayers |
| title_sort | spin textured chern bands in ab stacked transition metal dichalcogenide bilayers |
| url | https://hdl.handle.net/1721.1/141859.2 |
| work_keys_str_mv | AT zhangyang spintexturedchernbandsinabstackedtransitionmetaldichalcogenidebilayers AT devakultrithep spintexturedchernbandsinabstackedtransitionmetaldichalcogenidebilayers AT fuliang spintexturedchernbandsinabstackedtransitionmetaldichalcogenidebilayers |