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Localised magneto-optical collective excitations of impure graphene

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Fischer, Andrea M., Dzyubenko, Alexander B. and Roemer, Rudolf A. (2009) Localised magneto-optical collective excitations of impure graphene. Annalen der Physik, Vol.18 (No.12 Sp. Iss. SI). pp. 944-948. doi:10.1002/andp.200910381 ISSN 0003-3804.

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Official URL: http://dx.doi.org/10.1002/andp.200910381

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Abstract

We study optically-induced collective excitations of graphene in the presence of a strong perpendicular magnetic field and a single impurity. We determine the energies and absorption strengths of these excitations, which become localised on the impurity. Two different types of impurity are considered i. the long-range Coulomb impurity, ii. a delta-function impurity located at either an A or B graphene sublattice site. Both impurity types result in some bound states appearing both above and below the magnetoplasmon continuum, although the effect of the short-range impurity is less pronounced. The dependence of the energies and oscillator strengths of the bound states on the filling factor is investigated. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Other > Institute of Advanced Study
Faculty of Science, Engineering and Medicine > Science > Physics
Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing
Library of Congress Subject Headings (LCSH): Magnetooptics, Graphene, Plasmons (Physics), Collective excitations
Journal or Publication Title: Annalen der Physik
Publisher: Wiley - VCH Verlag GmbH & Co. KGaA
ISSN: 0003-3804
Official Date: December 2009
Dates:
DateEvent
December 2009Published
Volume: Vol.18
Number: No.12 Sp. Iss. SI
Number of Pages: 5
Page Range: pp. 944-948
DOI: 10.1002/andp.200910381
Status: Peer Reviewed
Publication Status: Published
Conference Paper Type: Paper
Type of Event: Conference

Data sourced from Thomson Reuters' Web of Knowledge

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