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arXiv · 0909.2825

The magnetic field particle-hole excitation spectrum in doped graphene and in a standard two-dimensional electron gas

R. Roldan·M. O. Goerbig·J. -N. Fuchs
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Abstract

The particle-hole excitation spectrum for doped graphene is calculated from the dynamical polarizability. We study the zero and finite magnetic field cases and compare them to the standard two-dimensional electron gas. The effects of electron-electron interaction are included within the random phase approximation. From the obtained polarizability, we study the screening effects and the collective excitations (plasmon, magneto-excitons, upper-hybrid mode and linear magneto-plasmons). We stress the differences with the usual 2DEG.

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R. Roldan, M. O. Goerbig, J. -N. Fuchs. 2009-11-09. The magnetic field particle-hole excitation spectrum in doped graphene and in a standard two-dimensional electron gas. https://doi.org/10.1088/0268-1242%2F25%2F3%2F034005

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