期刊
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
卷 25, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0268-1242/25/3/034005
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资金
- 'Triangle de la physique'
- ANR [ANR-06-NANO019-03]
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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