Unidirectional surface plasmons in nonreciprocal graphene
We demonstrate theoretically the existence of unidirectional surface plasmons in the nonreciprocal graphene-based gyrotropic interfaces. We show that a unidirectional frequency range is raised under a static external magnetic field where only one propagating direction is allowed for the surface plas...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/99455 http://hdl.handle.net/10220/17639 |
| _version_ | 1824454690297872384 |
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| author | Lin, Xiao Xu, Yang Zhang, Baile Hao, Ran Chen, Hongsheng Li, Erping |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Lin, Xiao Xu, Yang Zhang, Baile Hao, Ran Chen, Hongsheng Li, Erping |
| author_sort | Lin, Xiao |
| collection | NTU |
| description | We demonstrate theoretically the existence of unidirectional surface plasmons in the nonreciprocal graphene-based gyrotropic interfaces. We show that a unidirectional frequency range is raised under a static external magnetic field where only one propagating direction is allowed for the surface plasmons mode. By efficiently controlling the chemical potential of graphene, the unidirectional working frequency can be continuously tunable from THz to near-infrared and even visible. Particularly, the unidirectional frequency bandwidth can be 1– 2 orders of magnitude larger than that in metal under the same magnetic field, which arises from the superiority of extremely small effective electron mass in graphene. Based on our theoretical analysis, two tunable graphene-based directional devices are proposed, showing the appealing properties of nonreciprocal graphene in the nonreciprocal optical devices design. |
| first_indexed | 2025-02-19T03:26:19Z |
| format | Journal Article |
| id | ntu-10356/99455 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:26:19Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/994552023-02-28T19:41:05Z Unidirectional surface plasmons in nonreciprocal graphene Lin, Xiao Xu, Yang Zhang, Baile Hao, Ran Chen, Hongsheng Li, Erping School of Physical and Mathematical Sciences DRNTU::Science::Physics::Optics and light DRNTU::Engineering::Materials::Energy materials We demonstrate theoretically the existence of unidirectional surface plasmons in the nonreciprocal graphene-based gyrotropic interfaces. We show that a unidirectional frequency range is raised under a static external magnetic field where only one propagating direction is allowed for the surface plasmons mode. By efficiently controlling the chemical potential of graphene, the unidirectional working frequency can be continuously tunable from THz to near-infrared and even visible. Particularly, the unidirectional frequency bandwidth can be 1– 2 orders of magnitude larger than that in metal under the same magnetic field, which arises from the superiority of extremely small effective electron mass in graphene. Based on our theoretical analysis, two tunable graphene-based directional devices are proposed, showing the appealing properties of nonreciprocal graphene in the nonreciprocal optical devices design. MOE (Min. of Education, S’pore) Published version 2013-11-15T01:19:58Z 2019-12-06T20:07:38Z 2013-11-15T01:19:58Z 2019-12-06T20:07:38Z 2013 2013 Journal Article Lin, X., Xu, Y., Zhang, B., Hao, R., Chen, H., & Li, E. (2013). Unidirectional surface plasmons in nonreciprocal graphene. New Journal of Physics, 15(11), 113003. 1367-2630 https://hdl.handle.net/10356/99455 http://hdl.handle.net/10220/17639 10.1088/1367-2630/15/11/113003 en New journal of physics Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI [http://dx.doi.org/10.1088/1367-2630/15/11/113003]. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Optics and light DRNTU::Engineering::Materials::Energy materials Lin, Xiao Xu, Yang Zhang, Baile Hao, Ran Chen, Hongsheng Li, Erping Unidirectional surface plasmons in nonreciprocal graphene |
| title | Unidirectional surface plasmons in nonreciprocal graphene |
| title_full | Unidirectional surface plasmons in nonreciprocal graphene |
| title_fullStr | Unidirectional surface plasmons in nonreciprocal graphene |
| title_full_unstemmed | Unidirectional surface plasmons in nonreciprocal graphene |
| title_short | Unidirectional surface plasmons in nonreciprocal graphene |
| title_sort | unidirectional surface plasmons in nonreciprocal graphene |
| topic | DRNTU::Science::Physics::Optics and light DRNTU::Engineering::Materials::Energy materials |
| url | https://hdl.handle.net/10356/99455 http://hdl.handle.net/10220/17639 |
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