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

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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 > Physics Faculty of 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:	Date Event December 2009 Published
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

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