Anyonic Chern insulator in graphene induced by surface electromagnon vacuum fluctuations
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908651272273920 |
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| author | Cheng, Xinle Boström, Emil Viñas Gao, Frank Y. Baldini, Edoardo Kennes, Dante M. Rubio, Angel |
| author_facet | Cheng, Xinle Boström, Emil Viñas Gao, Frank Y. Baldini, Edoardo Kennes, Dante M. Rubio, Angel |
| contents | Sub-wavelength cavities have emerged as a promising platform to realize strong light-matter coupling in condensed matter systems. Previous studies are limited to dielectric sub-wavelength cavities, which preserve time-reversal symmetry. Here, we lift this constraint by proposing a cavity system based on magneto-electric materials, which host surface electromagnons with non-orthogonal electric field and magnetic field components. The quantum fluctuations of the surface electromagnons drive a nearby graphene monolayer into an anyonic Chern insulator, characterized by anyonic quasi-particles and a topological gap that decays polynomially with the graphene-substrate distance. Our work opens a path to controllably break time-reversal symmetry and induce exotic quantum states through cavity vacuum fluctuations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_10836 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anyonic Chern insulator in graphene induced by surface electromagnon vacuum fluctuations Cheng, Xinle Boström, Emil Viñas Gao, Frank Y. Baldini, Edoardo Kennes, Dante M. Rubio, Angel Mesoscale and Nanoscale Physics Materials Science Sub-wavelength cavities have emerged as a promising platform to realize strong light-matter coupling in condensed matter systems. Previous studies are limited to dielectric sub-wavelength cavities, which preserve time-reversal symmetry. Here, we lift this constraint by proposing a cavity system based on magneto-electric materials, which host surface electromagnons with non-orthogonal electric field and magnetic field components. The quantum fluctuations of the surface electromagnons drive a nearby graphene monolayer into an anyonic Chern insulator, characterized by anyonic quasi-particles and a topological gap that decays polynomially with the graphene-substrate distance. Our work opens a path to controllably break time-reversal symmetry and induce exotic quantum states through cavity vacuum fluctuations. |
| title | Anyonic Chern insulator in graphene induced by surface electromagnon vacuum fluctuations |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2511.10836 |