Edge magnetoplasmons and the optical excitations in graphene disks
Artikel i vetenskaplig tidskrift, 2012

We discuss the edge magnetoplasmon properties in highly doped graphene disks, and the corresponding optical excitations. Edge magnetoplasmons with nonzero angular momentum (l not equal 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 (2012); 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.

monolayer graphene

2-dimensional electron-gas

photonics

plasmons

Författare

Weihua Wang

Chalmers, Teknisk fysik, Kondenserade materiens teori

Peter Apell

Chalmers, Teknisk fysik, Kondenserade materiens teori

Jari Kinaret

Chalmers, Teknisk fysik, Kondenserade materiens teori

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 86

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Fysik

DOI

10.1103/PhysRevB.86.125450