Topological magnon-photon interaction for cavity magnonics
Abstract The study of cavity magnonics and topological insulators has made significant advances over the past decade, however the possibility of combining the two fields is still unexplored. Here, we explore such connection by investigating hybrid cavity systems that incorporate both a ferromagnet a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-07-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-023-01316-8 |
| _version_ | 1827875472920281088 |
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| author | Jongjun M. Lee Myung-Joong Hwang Hyun-Woo Lee |
| author_facet | Jongjun M. Lee Myung-Joong Hwang Hyun-Woo Lee |
| author_sort | Jongjun M. Lee |
| collection | DOAJ |
| description | Abstract The study of cavity magnonics and topological insulators has made significant advances over the past decade, however the possibility of combining the two fields is still unexplored. Here, we explore such connection by investigating hybrid cavity systems that incorporate both a ferromagnet and a topological insulator. We find that electrons in the topological surface state efficiently mediate the effective electric dipole coupling between the spin of the ferromagnet and the electric field of the cavity, in contrast with the conventional cavity magnonics theory based on magnetic dipole coupling. We refer to this coupling as topological magnon-photon interaction, estimating it one order of magnitude stronger than the conventional magnon-photon coupling, and showing that its sign can be manipulated. We discuss the potential of our proposed device to allow for scaling down and controlling the cavity system using electronics. Our results provide solid ground for exploring the functionalities enabled by merging cavity magnonics with topological insulators. |
| first_indexed | 2024-03-12T17:08:30Z |
| format | Article |
| id | doaj.art-ae22d3cdb2be455eb267fa6c56fc6e76 |
| institution | Directory Open Access Journal |
| issn | 2399-3650 |
| language | English |
| last_indexed | 2024-03-12T17:08:30Z |
| publishDate | 2023-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj.art-ae22d3cdb2be455eb267fa6c56fc6e762023-08-06T11:16:44ZengNature PortfolioCommunications Physics2399-36502023-07-01611710.1038/s42005-023-01316-8Topological magnon-photon interaction for cavity magnonicsJongjun M. Lee0Myung-Joong Hwang1Hyun-Woo Lee2Department of Physics, Pohang University of Science and Technology (POSTECH)Division of Natural and Applied Sciences, Duke Kunshan UniversityDepartment of Physics, Pohang University of Science and Technology (POSTECH)Abstract The study of cavity magnonics and topological insulators has made significant advances over the past decade, however the possibility of combining the two fields is still unexplored. Here, we explore such connection by investigating hybrid cavity systems that incorporate both a ferromagnet and a topological insulator. We find that electrons in the topological surface state efficiently mediate the effective electric dipole coupling between the spin of the ferromagnet and the electric field of the cavity, in contrast with the conventional cavity magnonics theory based on magnetic dipole coupling. We refer to this coupling as topological magnon-photon interaction, estimating it one order of magnitude stronger than the conventional magnon-photon coupling, and showing that its sign can be manipulated. We discuss the potential of our proposed device to allow for scaling down and controlling the cavity system using electronics. Our results provide solid ground for exploring the functionalities enabled by merging cavity magnonics with topological insulators.https://doi.org/10.1038/s42005-023-01316-8 |
| spellingShingle | Jongjun M. Lee Myung-Joong Hwang Hyun-Woo Lee Topological magnon-photon interaction for cavity magnonics Communications Physics |
| title | Topological magnon-photon interaction for cavity magnonics |
| title_full | Topological magnon-photon interaction for cavity magnonics |
| title_fullStr | Topological magnon-photon interaction for cavity magnonics |
| title_full_unstemmed | Topological magnon-photon interaction for cavity magnonics |
| title_short | Topological magnon-photon interaction for cavity magnonics |
| title_sort | topological magnon photon interaction for cavity magnonics |
| url | https://doi.org/10.1038/s42005-023-01316-8 |
| work_keys_str_mv | AT jongjunmlee topologicalmagnonphotoninteractionforcavitymagnonics AT myungjoonghwang topologicalmagnonphotoninteractionforcavitymagnonics AT hyunwoolee topologicalmagnonphotoninteractionforcavitymagnonics |