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Optical spectroscopy of bilayer graphene
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Geng, Baisong | - |
dc.contributor.author | Horng, Jason | - |
dc.contributor.author | Zhang, Yuanbo | - |
dc.contributor.author | Tang, Tsung-Ta | - |
dc.contributor.author | Park, Cheol-Hwan | - |
dc.contributor.author | Girit, Caglar | - |
dc.contributor.author | Hao, Zhao | - |
dc.contributor.author | Martin, Michael | - |
dc.contributor.author | Zettl, Alex | - |
dc.contributor.author | Crommie, Michael | - |
dc.contributor.author | Louie, Steven | - |
dc.contributor.author | Wang, Feng | - |
dc.date.accessioned | 2024-05-16T01:17:52Z | - |
dc.date.available | 2024-05-16T01:17:52Z | - |
dc.date.created | 2023-05-10 | - |
dc.date.created | 2023-05-10 | - |
dc.date.created | 2023-05-10 | - |
dc.date.issued | 2010-12 | - |
dc.identifier.citation | Physica Status Solidi (B): Basic Research, Vol.247 No.11-12, pp.2931-2934 | - |
dc.identifier.issn | 0370-1972 | - |
dc.identifier.uri | https://hdl.handle.net/10371/202358 | - |
dc.description.abstract | Infrared spectroscopy reveals unusual tunable electronic structure and optical behaviour in electrically gated bilayer graphene. In a dual-gate bilayer graphene device, we were able to control the carrier doping and a semiconductor bandgap independently by using different combinations of the top and bottom gate voltages. The field-induced bandgap can be probed directly through the emerging interband transitions in infrared absorption spectra. A tunable bandgap up to 250 meV has been observed in our dual-gate bilayer graphene devices. This unique tunable bandgap can lead to many new physical phenomena. One example is an unusual phonon-exciton Fano resonance when the electronic bandgap is tuned to match the phonon vibration energy. Here (continuous) electron-hole transitions and (discrete) phonon vibrations form a coupled system described by the Fano resonance, and the infrared absorption spectra exhibit characteristic quantum interference between the phonon and exciton transitions. Remarkably, this coupled phonon-exciton Fano resonance can be continuously tuned through electrical gating in bilayer graphene, and its behaviour is described quantitatively by theory. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | - |
dc.language | 영어 | - |
dc.publisher | John Wiley & Sons Ltd. | - |
dc.title | Optical spectroscopy of bilayer graphene | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/pssb.201000324 | - |
dc.citation.journaltitle | Physica Status Solidi (B): Basic Research | - |
dc.identifier.wosid | 000285798400070 | - |
dc.identifier.scopusid | 2-s2.0-78649708299 | - |
dc.citation.endpage | 2934 | - |
dc.citation.number | 11-12 | - |
dc.citation.startpage | 2931 | - |
dc.citation.volume | 247 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Park, Cheol-Hwan | - |
dc.type.docType | Article;Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordAuthor | Bilayer graphene | - |
dc.subject.keywordAuthor | Fano resonance | - |
dc.subject.keywordAuthor | Infrared spectroscopy | - |
dc.subject.keywordAuthor | Tunable bandgap | - |
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