Cyclotron resonance study of the electron and hole velocity in graphene monolayers

By R. Deacon, K. Chuang, R. J.Nicholas, K. Novoselov, A.K. Geim. 2007

245 citations recorded by the source corpus.

We report studies of cyclotron resonance in monolayer graphene. Cyclotron resonance is detected using the photoconductive response of the sample for several different Landau level occupancies. The experiments measure an electron velocity at the K- (Dirac) point of $c_{K}^{*}$ = 1.093 x 10$^{6}$ ms$^{-1}$ and in addition detect a significant asymmetry between the electron and hole bands, leading to a difference in the electron and hole velocities of 5% by energies of 125 meV away from the Dirac point.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/edb8c0a85bf2d5a8cae5296d0ad4e779bbe0fd51

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Magical Allotropes of Carbon: Prospects and Applications (2016, background): “ductivity in graphene is independent of Fermi energy so that the effective scattering of the electron can vanish so graphene is metal.(215,216) In contrast, according to band theory metals and semiconductors possess one and two”
Dirac electronic states in graphene systems: optical spectroscopy studies (2010, methodology): “Magneto-optical response of the H point of graphite includes a set of transitions equivalent to those of graphene [48, 76, 78], but it is nevertheless significantly richer [133].”
The electronic properties of graphene (2007, background): “The experimental observation of the √ n dependence of the cyclotron mass provides evidence for the existence of massless Dirac quasiparticles in graphene (Deacon et al., 2007; Jiang et al., 2007a; Zhang et al., 2005) - the usual parabolic (Schrödinger) dispersion implies a constant cyclotron mass.”
Electronic properties of graphene-based bilayer systems (2015, background): “y S. Reich et al. [40] indicate that 0:02t<t0<0:2t depending on the tight-binding parametrization. A t to cyclotron resonance experiments in the single-layer graphene done by R.S. Deacon et al. [41] nds t0ˇ0:1eV. The interplane next-nearest-neighbor integral tg is signicantly smaller than the ”