Topological excitons in moiré MoTe$_2$/WSe$_2$ heterobilayers
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866908363977129984 |
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| author | Froese, Paul Neupert, Titus Wagner, Glenn |
| author_facet | Froese, Paul Neupert, Titus Wagner, Glenn |
| contents | Due to the presence of flat Chern bands, moiré transition metal dichalcogenide (TMD) bilayers are a platform to realize strongly correlated topological phases of fermions such as fractional Chern insulators. TMDs are also known to host long-lived excitons, which inherit the topology of the underlying Chern bands. For the particular example of MoTe$_2$/WSe$_2$ heterobilayers we perform a time-dependent Hartree-Fock calculation to identify a regime in the phase diagram where the excitons themselves form a topological flat band. This paves a way towards realizing strongly correlated states of bosons in moiré TMDs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04371 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Topological excitons in moiré MoTe$_2$/WSe$_2$ heterobilayers Froese, Paul Neupert, Titus Wagner, Glenn Strongly Correlated Electrons Due to the presence of flat Chern bands, moiré transition metal dichalcogenide (TMD) bilayers are a platform to realize strongly correlated topological phases of fermions such as fractional Chern insulators. TMDs are also known to host long-lived excitons, which inherit the topology of the underlying Chern bands. For the particular example of MoTe$_2$/WSe$_2$ heterobilayers we perform a time-dependent Hartree-Fock calculation to identify a regime in the phase diagram where the excitons themselves form a topological flat band. This paves a way towards realizing strongly correlated states of bosons in moiré TMDs. |
| title | Topological excitons in moiré MoTe$_2$/WSe$_2$ heterobilayers |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2409.04371 |