Interlayer excitons with tunable dispersion relation
Interlayer excitons, comprising an electron in one material bound by Coulomb attraction to a hole in an adjacent material, are composite bosons that can assume a variety of many-body phases. The phase diagram of the bosonic system is largely determined by the dispersion relation of the bosons, which...
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/110505 https://orcid.org/0000-0003-0774-3563 |
| _version_ | 1810972522949115904 |
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| author | Skinner, Brian J |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Skinner, Brian J |
| author_sort | Skinner, Brian J |
| collection | MIT |
| description | Interlayer excitons, comprising an electron in one material bound by Coulomb attraction to a hole in an adjacent material, are composite bosons that can assume a variety of many-body phases. The phase diagram of the bosonic system is largely determined by the dispersion relation of the bosons, which itself arises as a combination of the dispersion relations of the electron and hole separately. Here I show that in situations where either the electron or the hole has a nonmonotonic, “Mexican hat-shaped” dispersion relation, the exciton dispersion relation can have a range of qualitatively different forms, each corresponding to a different many-body phase at low temperature. This diversity suggests a platform for continuously tuning between different quantum phases using an external field. |
| first_indexed | 2024-09-23T07:53:02Z |
| format | Article |
| id | mit-1721.1/110505 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T07:53:02Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1105052022-09-23T09:23:39Z Interlayer excitons with tunable dispersion relation Skinner, Brian J Massachusetts Institute of Technology. Research Laboratory of Electronics Skinner, Brian J Interlayer excitons, comprising an electron in one material bound by Coulomb attraction to a hole in an adjacent material, are composite bosons that can assume a variety of many-body phases. The phase diagram of the bosonic system is largely determined by the dispersion relation of the bosons, which itself arises as a combination of the dispersion relations of the electron and hole separately. Here I show that in situations where either the electron or the hole has a nonmonotonic, “Mexican hat-shaped” dispersion relation, the exciton dispersion relation can have a range of qualitatively different forms, each corresponding to a different many-body phase at low temperature. This diversity suggests a platform for continuously tuning between different quantum phases using an external field. United States. Dept. of Energy. Office of Basic Energy Sciences (DE-SC0001088) 2017-07-06T18:51:32Z 2017-07-06T18:51:32Z 2016-06 2016-05 2016-06-07T22:00:20Z Article http://purl.org/eprint/type/JournalArticle 2469-9950 2469-9969 http://hdl.handle.net/1721.1/110505 Skinner, Brian. "Interlayer excitons with tunable dispersion relation." Physical Review B 93, 235110 (June 2016): 1-7 © 2016 American Physical Society https://orcid.org/0000-0003-0774-3563 en http://dx.doi.org/10.1103/PhysRevB.93.235110 Physical Review B 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. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Skinner, Brian J Interlayer excitons with tunable dispersion relation |
| title | Interlayer excitons with tunable dispersion relation |
| title_full | Interlayer excitons with tunable dispersion relation |
| title_fullStr | Interlayer excitons with tunable dispersion relation |
| title_full_unstemmed | Interlayer excitons with tunable dispersion relation |
| title_short | Interlayer excitons with tunable dispersion relation |
| title_sort | interlayer excitons with tunable dispersion relation |
| url | http://hdl.handle.net/1721.1/110505 https://orcid.org/0000-0003-0774-3563 |
| work_keys_str_mv | AT skinnerbrianj interlayerexcitonswithtunabledispersionrelation |