期刊
PHYSICAL REVIEW B
卷 80, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.085408
关键词
excited states; excitons; graphene; light scattering; magnons; plasmons; quantum Hall effect; RPA calculations; two-dimensional electron gas
资金
- ANR [ANR-06-NANO-019-03]
A doped graphene layer in the integer quantum-Hall regime reveals a highly unusual particle-hole excitation spectrum, which is calculated from the dynamical polarizability in the random-phase approximation. We find that the elementary neutral excitations in graphene in a magnetic field are unlike those of a standard two-dimensional electron gas: in addition to the upper-hybrid mode, the particle-hole spectrum is reorganized in linear magnetoplasmons that disperse roughly parallel to omega=v(F)q, instead of the usual horizontal (almost dispersionless) magnetoexcitons. These modes could be detected in an inelastic light-scattering experiment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据