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Filling-factor-dependent mangetophonon resonance in graphene.

Goerbig, M.O. and Fuchs, J.N. and Kechedzhi, K. and Falko, Vladimir I. (2007) Filling-factor-dependent mangetophonon resonance in graphene. Physical Review Letters, 99 (8). 087402 1-4. ISSN 1079-7114

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Abstract

We describe a peculiar fine structure acquired by the in-plane optical phonon at the point in graphene when it is brought into resonance with one of the inter-Landau-level transitions in this material. The effect is most pronounced when this lattice mode (associated with the G band in graphene Raman spectrum) is in resonance with inter-Landau-level transitions 0+, 1 and -,10, at a magnetic field B030 T. It can be used to measure the strength of the electron-phonon coupling directly, and its filling-factor dependence can be used experimentally to detect circularly polarized lattice vibrations.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Additional Information: We predicted a peculiar fine structure acquired by the in-plane optical phonon in monolayer graphene (G band in its Raman spectrum) when it is brought into resonance with the lowest inter-Landau-level transition in this material. This effect can be used for a direct measurement of the electron-phonon coupling strength. RAE_import_type : Journal article RAE_uoa_type : Physics
Uncontrolled Keywords: band structure ; carbon ; electron-phonon interactions ; fine structure ; Landau levels ; lattice energy ; magnetophonon effects ; Raman spectra
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 2360
Deposited By: ep_importer
Deposited On: 01 Apr 2008 16:23
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:12
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/2360

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