Light-induced topological superconductivity in transition metal dichalcogenide monolayers
Funding Information: We acknowledge very useful discussions with Ataç İmamoğlu. A.J. acknowledges financial support from the Jenny and Antti Wihuri Foundation. The calculations presented above were performed using computer resources within the Aalto University School of Science “Science-IT” project....
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ftaaltouniv:oai:aaltodoc.aalto.fi:123456789/117802 2023-05-15T16:55:51+02:00 Light-induced topological superconductivity in transition metal dichalcogenide monolayers Julku, Aleksi Kinnunen, Jami J. Camacho-Guardian, Arturo Bruun, Georg M. Aarhus University Department of Applied Physics Universidad Nacional Autónoma de México Aalto-yliopisto Aalto University 2022-10-01 application/pdf https://aaltodoc.aalto.fi/handle/123456789/117802 https://doi.org/10.1103/PhysRevB.106.134510 en eng American Physical Society Physical Review B Volume 106, issue 13 Julku , A , Kinnunen , J J , Camacho-Guardian , A & Bruun , G M 2022 , ' Light-induced topological superconductivity in transition metal dichalcogenide monolayers ' , Physical Review B , vol. 106 , no. 13 , 134510 , pp. 1-11 . https://doi.org/10.1103/PhysRevB.106.134510 2469-9950 2469-9969 PURE UUID: 270759ab-0ff4-473f-9701-0a739801ed5e PURE ITEMURL: https://research.aalto.fi/en/publications/270759ab-0ff4-473f-9701-0a739801ed5e PURE LINK: http://www.scopus.com/inward/record.url?scp=85140715725&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/92344845/Light_induced_topological_superconductivity_in_transition_metal_dichalcogenide_monolayers.pdf https://aaltodoc.aalto.fi/handle/123456789/117802 URN:NBN:fi:aalto-202211236562 doi:10.1103/PhysRevB.106.134510 openAccess A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä publishedVersion 2022 ftaaltouniv https://doi.org/10.1103/PhysRevB.106.134510 2022-12-15T19:35:21Z Funding Information: We acknowledge very useful discussions with Ataç İmamoğlu. A.J. acknowledges financial support from the Jenny and Antti Wihuri Foundation. The calculations presented above were performed using computer resources within the Aalto University School of Science “Science-IT” project. This work has been supported by the Danish National Research Foundation through the Center of Excellence “CCQ” (Grant Agreement No. DNRF156). Publisher Copyright: © 2022 American Physical Society. Monolayer transition metal dichalcogenides (TMDs) host deeply bound excitons interacting with itinerant electrons, and as such they represent an exciting new quantum many-body Bose-Fermi mixture. Here, we demonstrate that electrons interacting with a Bose-Einstein condensate (BEC) of exciton-polaritons can realize a two-dimensional topological px+ipy superconductor. Using strong coupling Eliashberg theory, we show that this is caused by an attractive interaction mediated by the BEC, which overcompensates the repulsive Coulomb interaction between the electrons. The hybrid light-matter nature of the BEC is crucial for achieving this, since it can be used to reduce retardation effects and increase the mediated interaction in regimes important for pairing. We finally show how the great flexibility of TMDs allows one to tune the critical temperature of the topological superconducting phase to be within experimental reach. Peer reviewed Article in Journal/Newspaper IPY Aalto University Publication Archive (Aaltodoc) Jenny ENVELOPE(-68.417,-68.417,-67.733,-67.733) Physical Review B 106 13 |
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Funding Information: We acknowledge very useful discussions with Ataç İmamoğlu. A.J. acknowledges financial support from the Jenny and Antti Wihuri Foundation. The calculations presented above were performed using computer resources within the Aalto University School of Science “Science-IT” project. This work has been supported by the Danish National Research Foundation through the Center of Excellence “CCQ” (Grant Agreement No. DNRF156). Publisher Copyright: © 2022 American Physical Society. Monolayer transition metal dichalcogenides (TMDs) host deeply bound excitons interacting with itinerant electrons, and as such they represent an exciting new quantum many-body Bose-Fermi mixture. Here, we demonstrate that electrons interacting with a Bose-Einstein condensate (BEC) of exciton-polaritons can realize a two-dimensional topological px+ipy superconductor. Using strong coupling Eliashberg theory, we show that this is caused by an attractive interaction mediated by the BEC, which overcompensates the repulsive Coulomb interaction between the electrons. The hybrid light-matter nature of the BEC is crucial for achieving this, since it can be used to reduce retardation effects and increase the mediated interaction in regimes important for pairing. We finally show how the great flexibility of TMDs allows one to tune the critical temperature of the topological superconducting phase to be within experimental reach. Peer reviewed |
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Aarhus University Department of Applied Physics Universidad Nacional Autónoma de México Aalto-yliopisto Aalto University |
format |
Article in Journal/Newspaper |
author |
Julku, Aleksi Kinnunen, Jami J. Camacho-Guardian, Arturo Bruun, Georg M. |
spellingShingle |
Julku, Aleksi Kinnunen, Jami J. Camacho-Guardian, Arturo Bruun, Georg M. Light-induced topological superconductivity in transition metal dichalcogenide monolayers |
author_facet |
Julku, Aleksi Kinnunen, Jami J. Camacho-Guardian, Arturo Bruun, Georg M. |
author_sort |
Julku, Aleksi |
title |
Light-induced topological superconductivity in transition metal dichalcogenide monolayers |
title_short |
Light-induced topological superconductivity in transition metal dichalcogenide monolayers |
title_full |
Light-induced topological superconductivity in transition metal dichalcogenide monolayers |
title_fullStr |
Light-induced topological superconductivity in transition metal dichalcogenide monolayers |
title_full_unstemmed |
Light-induced topological superconductivity in transition metal dichalcogenide monolayers |
title_sort |
light-induced topological superconductivity in transition metal dichalcogenide monolayers |
publisher |
American Physical Society |
publishDate |
2022 |
url |
https://aaltodoc.aalto.fi/handle/123456789/117802 https://doi.org/10.1103/PhysRevB.106.134510 |
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ENVELOPE(-68.417,-68.417,-67.733,-67.733) |
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Jenny |
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Jenny |
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IPY |
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IPY |
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Physical Review B Volume 106, issue 13 Julku , A , Kinnunen , J J , Camacho-Guardian , A & Bruun , G M 2022 , ' Light-induced topological superconductivity in transition metal dichalcogenide monolayers ' , Physical Review B , vol. 106 , no. 13 , 134510 , pp. 1-11 . https://doi.org/10.1103/PhysRevB.106.134510 2469-9950 2469-9969 PURE UUID: 270759ab-0ff4-473f-9701-0a739801ed5e PURE ITEMURL: https://research.aalto.fi/en/publications/270759ab-0ff4-473f-9701-0a739801ed5e PURE LINK: http://www.scopus.com/inward/record.url?scp=85140715725&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/92344845/Light_induced_topological_superconductivity_in_transition_metal_dichalcogenide_monolayers.pdf https://aaltodoc.aalto.fi/handle/123456789/117802 URN:NBN:fi:aalto-202211236562 doi:10.1103/PhysRevB.106.134510 |
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openAccess |
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https://doi.org/10.1103/PhysRevB.106.134510 |
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Physical Review B |
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106 |
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13 |
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1766046899374129152 |