Leaky exciton condensates in transition metal dichalcogenide moiré bilayers
| cam.depositDate | 2022-03-22 | |
| cam.issuedOnline | 2022-05-24 | |
| cam.orpheus.counter | 4 | |
| dc.contributor.author | Remez, B | |
| dc.contributor.author | Cooper, NR | |
| dc.contributor.orcid | Remez, B [0000-0002-8108-5303] | |
| dc.contributor.orcid | Cooper, NR [0000-0002-4662-1254] | |
| dc.date.accessioned | 2022-03-24T00:30:31Z | |
| dc.date.available | 2022-03-24T00:30:31Z | |
| dc.date.issued | 2022 | |
| dc.date.updated | 2022-03-22T21:15:08Z | |
| dc.description.abstract | We show that the "dark condensates" that arise when excitons form a Bose-Einstein condensate in a material with an indirect bandgap are not completely dark to optical emission. Rather, such states are "leaky condensates" in which optical emission is facilitated by many-body interactions. We analyze the properties of these leaky condensates in the context of twisted bilayers of transition metal dichalcogenides, which host strongly interacting excitons and an indirect bandgap. We show that this interaction-driven "leaky" emission dominates photoluminescence at low temperatures, with distinctive qualitative features. Finally, we propose that in these materials, unique intervalley physics can lead to crystal symmetry-breaking excitonic ordering, with implications for optical processes. | |
| dc.description.sponsorship | Cambridge Commonwealth, European and International Trust Simons Foundation | |
| dc.identifier.doi | 10.17863/CAM.82752 | |
| dc.identifier.eissn | 2643-1564 | |
| dc.identifier.issn | 2643-1564 | |
| dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/335320 | |
| dc.language.iso | eng | |
| dc.publisher | American Physical Society (APS) | |
| dc.publisher.department | Department of Physics Student | |
| dc.publisher.url | http://dx.doi.org/10.1103/PhysRevResearch.4.L022042 | |
| dc.rights | Attribution 4.0 International | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | cond-mat.mes-hall | |
| dc.subject | cond-mat.mes-hall | |
| dc.subject | cond-mat.str-el | |
| dc.title | Leaky exciton condensates in transition metal dichalcogenide moiré bilayers | |
| dc.type | Article | |
| dcterms.dateAccepted | 2022-03-22 | |
| prism.publicationName | Physical Review Research | |
| pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/P009565/1) | |
| pubs.funder-project-id | Simons Foundation (511029) | |
| pubs.funder-project-id | Engineering and Physical Sciences Research Council (EP/P034616/1) | |
| pubs.licence-display-name | Apollo Repository Deposit Licence Agreement | |
| pubs.licence-identifier | apollo-deposit-licence-2-1 | |
| rioxxterms.type | Journal Article/Review | |
| rioxxterms.version | VoR | |
| rioxxterms.versionofrecord | 10.1103/PhysRevResearch.4.L022042 |
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