Publisher's Note: Localized collective excitations in doped graphene in strong magnetic fields [Phys. Rev. B<b>80</b>, 165410 (2009)]

Fischer, Andrea M.; Dzyubenko, A. B.; Römer, Rudolf A.

doi:10.1103/physrevb.80.169906

Cited by 9 publications

(27 citation statements)

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“…17,18 In addition to this electric tuning method, graphene plasmons can also be tuned through magnetic fields. Graphene magnetoplasmons have been studied theoretically in infinite graphene sheets, [19][20][21][22] semi-infinite sheets, 23,24 and finite structures. 25,26 As a linear and gapless energy spectrum, graphene has a different Landau level (LL) distribution compared with a usual 2DES, reading…”

Section: Magneto-optical Conductivities Of Graphenementioning

confidence: 99%

Edge magnetoplasmons and the optical excitations in graphene disks

Apell

Kinaret

2012

Phys. Rev. B

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We discuss the edge magnetoplasmon properties in highly doped graphene disks, and the corresponding optical excitations. Edge magnetoplasmons with nonzero angular momentum (l = 0) have two branches corresponding to different edge current rotations with respect to the magnetic field. The resonance energies of one branch are blueshifted and the other redshifted relative to energies at B = 0, with the energy differences linearly proportional to the magnetic field. Recently, the l = 1 dipole mode has been investigated by two experiments using optical transmission spectroscopy [Crassee et al., Nano Lett. 12, 2470 Yan et al., ibid. 12, 3766 (2012)], and classical cyclotron resonances were found in highly doped graphene samples. These are determined by graphene magneto-optical conductivities, which behave like a conventional two-dimensional electron system in the high doping limit.

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Section: Magneto-optical Conductivities Of Graphenementioning

confidence: 99%

Edge magnetoplasmons and the optical excitations in graphene disks

Apell

Kinaret

2012

Phys. Rev. B

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“…One can think of this as being due to the repulsive Lorentz forces and attractive Coulomb forces, which act on the electron and hole, cancelling out when they have a certain separation, enabling the exciton's centre of mass to move in a straight line. The Hamiltonian (in the symmetric gauge) for MPs is [10]:…”

Section: Dispersion Relation For Magnetoplasmons In Pristine Graphenementioning

confidence: 99%

Magnetoplasmons and SU(4) symmetry in graphene

Fischer

Römer

Dzyubenko

2011

J. Phys.: Conf. Ser.

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Abstract. We study magnetoplasmons or neutral collective excitations of graphene in a strong perpendicular magnetic field, which can be modelled as bound electron-hole pairs. The SU(4) symmetry of graphene arising from spin and valley pseudospin degrees of freedom is explored using Young diagrams to correctly predict the degeneracies of these excitations. The multiplet structure of the states is identical to that of mesons composed of first and second generation quarks.

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“…Let us first recall [4] the single particle problem in the absence of an impurity potential. A single electron wavefunction in, e.g.…”

Section: Theoretical Modelmentioning

confidence: 99%

Localised magneto-optical collective excitations of impure graphene

Fischer¹,

Dzyubenko²,

Römer³

2009

Ann. Phys.

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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 δ-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.

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Publisher's Note: Localized collective excitations in doped graphene in strong magnetic fields [Phys. Rev. B80, 165410 (2009)]

Cited by 9 publications

References 0 publications

Edge magnetoplasmons and the optical excitations in graphene disks

Edge magnetoplasmons and the optical excitations in graphene disks

Magnetoplasmons and SU(4) symmetry in graphene

Localised magneto-optical collective excitations of impure graphene

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