Infrared Optical Response of Metallic Graphene Nanoribbons
We investigate theoretically the infrared optical response characteristics of metallic armchair/zigzag-edge graphene nanoribbons (A/ZGNRs) to an external longitudinally polarized electromagnetic field at low temperatures. Within the framework of linear response theory at the perturbation regime, we...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2010/258019 |
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| _version_ | 1850214691894198272 |
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| author | Zigang Duan Wenhu Liao Guanghui Zhou |
| author_facet | Zigang Duan Wenhu Liao Guanghui Zhou |
| author_sort | Zigang Duan |
| collection | DOAJ |
| description | We investigate theoretically the infrared optical response characteristics of metallic armchair/zigzag-edge graphene nanoribbons (A/ZGNRs) to an external longitudinally polarized electromagnetic field at low temperatures. Within the framework of linear response theory at the perturbation regime, we examine the optical infrared absorption threshold energy, absorption power, dielectric function, and electron energy loss spectra near the neutrality points of the systems. It is demonstrated that, by some numerical examples, the photon-assisted direct interband absorptions for AGNR exist with different selection rules from those for ZGNR and single-walled carbon nanotube at infrared regime. This infrared optical property dependence of GNRs on field frequency may be used to design graphene-based nanoscale optoelectronic devices for the detection of infrared electromagnetic irradiations. |
| format | Article |
| id | doaj-art-7ff6ecd1001e45a780de55bd0f0543ac |
| institution | OA Journals |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-7ff6ecd1001e45a780de55bd0f0543ac2025-08-20T02:08:49ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242010-01-01201010.1155/2010/258019258019Infrared Optical Response of Metallic Graphene NanoribbonsZigang Duan0Wenhu Liao1Guanghui Zhou2Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, ChinaDepartment of Physics and Key Laboratory for Low-Dimensional Structures and Quantum Manipulation (Ministry of Education), Hunan Normal University, Changsha 410081, ChinaDepartment of Physics and Key Laboratory for Low-Dimensional Structures and Quantum Manipulation (Ministry of Education), Hunan Normal University, Changsha 410081, ChinaWe investigate theoretically the infrared optical response characteristics of metallic armchair/zigzag-edge graphene nanoribbons (A/ZGNRs) to an external longitudinally polarized electromagnetic field at low temperatures. Within the framework of linear response theory at the perturbation regime, we examine the optical infrared absorption threshold energy, absorption power, dielectric function, and electron energy loss spectra near the neutrality points of the systems. It is demonstrated that, by some numerical examples, the photon-assisted direct interband absorptions for AGNR exist with different selection rules from those for ZGNR and single-walled carbon nanotube at infrared regime. This infrared optical property dependence of GNRs on field frequency may be used to design graphene-based nanoscale optoelectronic devices for the detection of infrared electromagnetic irradiations.http://dx.doi.org/10.1155/2010/258019 |
| spellingShingle | Zigang Duan Wenhu Liao Guanghui Zhou Infrared Optical Response of Metallic Graphene Nanoribbons Advances in Condensed Matter Physics |
| title | Infrared Optical Response of Metallic Graphene Nanoribbons |
| title_full | Infrared Optical Response of Metallic Graphene Nanoribbons |
| title_fullStr | Infrared Optical Response of Metallic Graphene Nanoribbons |
| title_full_unstemmed | Infrared Optical Response of Metallic Graphene Nanoribbons |
| title_short | Infrared Optical Response of Metallic Graphene Nanoribbons |
| title_sort | infrared optical response of metallic graphene nanoribbons |
| url | http://dx.doi.org/10.1155/2010/258019 |
| work_keys_str_mv | AT zigangduan infraredopticalresponseofmetallicgraphenenanoribbons AT wenhuliao infraredopticalresponseofmetallicgraphenenanoribbons AT guanghuizhou infraredopticalresponseofmetallicgraphenenanoribbons |