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arXiv · 0707.4674

Many-body exchange-correlation effects in graphene

E. H. Hwang·Ben Yu-Kuang Hu·S. Das Sarma
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Abstract

We calculate, within the leading-order dynamical-screening approximation, the electron self-energy and spectral function at zero temperature for extrinsic (or gated/doped) graphene. We also calculate hot carrier inelastic scattering due to electron-electron interactions in graphene. We obtain the inelastic quasiparticle lifetimes and associated mean free paths from the calculated self-energy. The linear dispersion and chiral property of graphene gives energy dependent lifetimes that are qualitatively different from those of parabolic-band semiconductors.

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E. H. Hwang, Ben Yu-Kuang Hu, S. Das Sarma. 2007-07-31. Many-body exchange-correlation effects in graphene. https://doi.org/10.1016/j.physe.2007.10.043

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