Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene
Two-dimensional electron systems subjected to a perpendicular magnetic field absorb electromagnetic radiation via the cyclotron resonance (CR). Here we report a qualitative breach of this well-known behaviour in graphene. Our study of the terahertz photoresponse reveals a resonant burst at the ma...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2022
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| Online Access: | https://hdl.handle.net/1721.1/141913 |
| _version_ | 1811090664849408000 |
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| author | Bandurin, DA Mönch, E Kapralov, K Phinney, IY Lindner, K Liu, S Edgar, JH Dmitriev, IA Jarillo-Herrero, P Svintsov, D Ganichev, SD |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Bandurin, DA Mönch, E Kapralov, K Phinney, IY Lindner, K Liu, S Edgar, JH Dmitriev, IA Jarillo-Herrero, P Svintsov, D Ganichev, SD |
| author_sort | Bandurin, DA |
| collection | MIT |
| description | Two-dimensional electron systems subjected to a perpendicular magnetic field
absorb electromagnetic radiation via the cyclotron resonance (CR). Here we
report a qualitative breach of this well-known behaviour in graphene. Our study
of the terahertz photoresponse reveals a resonant burst at the main overtone of
the CR, drastically exceeding the signal detected at the position of the
ordinary CR. In accordance with the developed theory, the photoresponse
dependencies on the magnetic field, doping level, and sample geometry suggest
that the origin of this anomaly lies in the near-field magnetoabsorption
facilitated by the Bernstein modes, ultra-slow magnetoplasmonic excitations
reshaped by nonlocal electron dynamics. Close to the CR harmonics, these modes
are characterized by a flat dispersion and a diverging plasmonic density of
states that strongly amplifies the radiation absorption. Besides fundamental
interest, our experimental results and developed theory show that the radiation
absorption via nonlocal collective modes can facilitate a strong photoresponse,
a behaviour potentially useful for infrared and terahertz technology. |
| first_indexed | 2024-09-23T14:49:55Z |
| format | Article |
| id | mit-1721.1/141913 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:49:55Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1419132023-06-20T16:59:37Z Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene Bandurin, DA Mönch, E Kapralov, K Phinney, IY Lindner, K Liu, S Edgar, JH Dmitriev, IA Jarillo-Herrero, P Svintsov, D Ganichev, SD Massachusetts Institute of Technology. Department of Physics Two-dimensional electron systems subjected to a perpendicular magnetic field absorb electromagnetic radiation via the cyclotron resonance (CR). Here we report a qualitative breach of this well-known behaviour in graphene. Our study of the terahertz photoresponse reveals a resonant burst at the main overtone of the CR, drastically exceeding the signal detected at the position of the ordinary CR. In accordance with the developed theory, the photoresponse dependencies on the magnetic field, doping level, and sample geometry suggest that the origin of this anomaly lies in the near-field magnetoabsorption facilitated by the Bernstein modes, ultra-slow magnetoplasmonic excitations reshaped by nonlocal electron dynamics. Close to the CR harmonics, these modes are characterized by a flat dispersion and a diverging plasmonic density of states that strongly amplifies the radiation absorption. Besides fundamental interest, our experimental results and developed theory show that the radiation absorption via nonlocal collective modes can facilitate a strong photoresponse, a behaviour potentially useful for infrared and terahertz technology. 2022-04-15T17:57:15Z 2022-04-15T17:57:15Z 2022-02-07 2022-04-15T17:43:42Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141913 Bandurin, DA, Mönch, E, Kapralov, K, Phinney, IY, Lindner, K et al. 2022. "Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene." Nature Physics. en 10.1038/s41567-021-01494-8 Nature Physics 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. application/pdf Springer Science and Business Media LLC arXiv |
| spellingShingle | Bandurin, DA Mönch, E Kapralov, K Phinney, IY Lindner, K Liu, S Edgar, JH Dmitriev, IA Jarillo-Herrero, P Svintsov, D Ganichev, SD Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene |
| title | Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene |
| title_full | Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene |
| title_fullStr | Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene |
| title_full_unstemmed | Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene |
| title_short | Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene |
| title_sort | cyclotron resonance overtones and near field magnetoabsorption via terahertz bernstein modes in graphene |
| url | https://hdl.handle.net/1721.1/141913 |
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