Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers
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 underlyin...
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| Format: | Article |
| Language: | English |
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American Physical Society
2025-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.023047 |
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| author | Paul Froese Titus Neupert Glenn Wagner |
| author_facet | Paul Froese Titus Neupert Glenn Wagner |
| author_sort | Paul Froese |
| collection | DOAJ |
| description | 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 | Article |
| id | doaj-art-cdd9945ca90f4bf18a98dfdcf8cd43e3 |
| institution | OA Journals |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-cdd9945ca90f4bf18a98dfdcf8cd43e32025-08-20T02:16:56ZengAmerican Physical SocietyPhysical Review Research2643-15642025-04-017202304710.1103/PhysRevResearch.7.023047Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayersPaul FroeseTitus NeupertGlenn WagnerDue 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.http://doi.org/10.1103/PhysRevResearch.7.023047 |
| spellingShingle | Paul Froese Titus Neupert Glenn Wagner Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers Physical Review Research |
| title | Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers |
| title_full | Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers |
| title_fullStr | Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers |
| title_full_unstemmed | Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers |
| title_short | Topological excitons in moiré MoTe_{2}/WSe_{2} heterobilayers |
| title_sort | topological excitons in moire mote 2 wse 2 heterobilayers |
| url | http://doi.org/10.1103/PhysRevResearch.7.023047 |
| work_keys_str_mv | AT paulfroese topologicalexcitonsinmoiremote2wse2heterobilayers AT titusneupert topologicalexcitonsinmoiremote2wse2heterobilayers AT glennwagner topologicalexcitonsinmoiremote2wse2heterobilayers |