Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime
Abstract Over the past few decades, exciton-polaritons have attracted substantial research interest due to their half-light-half-matter bosonic nature. Coupling exciton-polaritons with magnetic orders grants access to rich many-body phenomena, but has been limited by the availability of material sys...
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Nature Portfolio
2023-09-01
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Series: | Nature Communications |
Online Access: | https://doi.org/10.1038/s41467-023-41688-7 |
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author | Tingting Wang Dingyang Zhang Shiqi Yang Zhongchong Lin Quan Chen Jinbo Yang Qihuang Gong Zuxin Chen Yu Ye Wenjing Liu |
author_facet | Tingting Wang Dingyang Zhang Shiqi Yang Zhongchong Lin Quan Chen Jinbo Yang Qihuang Gong Zuxin Chen Yu Ye Wenjing Liu |
author_sort | Tingting Wang |
collection | DOAJ |
description | Abstract Over the past few decades, exciton-polaritons have attracted substantial research interest due to their half-light-half-matter bosonic nature. Coupling exciton-polaritons with magnetic orders grants access to rich many-body phenomena, but has been limited by the availability of material systems that exhibit simultaneous exciton resonances and magnetic ordering. Here we report magnetically-dressed microcavity exciton-polaritons in the van der Waals antiferromagnetic (AFM) semiconductor CrSBr coupled to a Tamm plasmon microcavity. Using angle-resolved spectroscopy, we reveal an exceptionally high exciton-photon coupling strength, up to 169 meV, demonstrating ultrastrong coupling that persists up to room temperature. By performing temperature-dependent spectroscopy, we show the magnetic nature of the exciton-polaritons in CrSBr microcavity as the magnetic order changes from AFM to paramagnetic. By applying an out-of-plane magnetic field, we achieve effective tuning of the polariton energy while maintaining the ultrastrong exciton-photon coupling strength. We attribute this to the spin canting process that modulates the interlayer exciton interaction. |
first_indexed | 2024-03-10T17:25:39Z |
format | Article |
id | doaj.art-bf59b8ae53c34cb0a810b633ac38a244 |
institution | Directory Open Access Journal |
issn | 2041-1723 |
language | English |
last_indexed | 2024-03-10T17:25:39Z |
publishDate | 2023-09-01 |
publisher | Nature Portfolio |
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series | Nature Communications |
spelling | doaj.art-bf59b8ae53c34cb0a810b633ac38a2442023-11-20T10:12:36ZengNature PortfolioNature Communications2041-17232023-09-011411710.1038/s41467-023-41688-7Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regimeTingting Wang0Dingyang Zhang1Shiqi Yang2Zhongchong Lin3Quan Chen4Jinbo Yang5Qihuang Gong6Zuxin Chen7Yu Ye8Wenjing Liu9State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversitySchool of Semiconductor Science and Technology, South China Normal UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversitySchool of Semiconductor Science and Technology, South China Normal UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversityState Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking UniversityAbstract Over the past few decades, exciton-polaritons have attracted substantial research interest due to their half-light-half-matter bosonic nature. Coupling exciton-polaritons with magnetic orders grants access to rich many-body phenomena, but has been limited by the availability of material systems that exhibit simultaneous exciton resonances and magnetic ordering. Here we report magnetically-dressed microcavity exciton-polaritons in the van der Waals antiferromagnetic (AFM) semiconductor CrSBr coupled to a Tamm plasmon microcavity. Using angle-resolved spectroscopy, we reveal an exceptionally high exciton-photon coupling strength, up to 169 meV, demonstrating ultrastrong coupling that persists up to room temperature. By performing temperature-dependent spectroscopy, we show the magnetic nature of the exciton-polaritons in CrSBr microcavity as the magnetic order changes from AFM to paramagnetic. By applying an out-of-plane magnetic field, we achieve effective tuning of the polariton energy while maintaining the ultrastrong exciton-photon coupling strength. We attribute this to the spin canting process that modulates the interlayer exciton interaction.https://doi.org/10.1038/s41467-023-41688-7 |
spellingShingle | Tingting Wang Dingyang Zhang Shiqi Yang Zhongchong Lin Quan Chen Jinbo Yang Qihuang Gong Zuxin Chen Yu Ye Wenjing Liu Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime Nature Communications |
title | Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime |
title_full | Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime |
title_fullStr | Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime |
title_full_unstemmed | Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime |
title_short | Magnetically-dressed CrSBr exciton-polaritons in ultrastrong coupling regime |
title_sort | magnetically dressed crsbr exciton polaritons in ultrastrong coupling regime |
url | https://doi.org/10.1038/s41467-023-41688-7 |
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