Many-body exchange-correlation effects in graphene

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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.
Submitted on July 8, 2007 to EP2DS-17, Genova, Italy

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/160617

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0707.4674
 http://arxiv.org/abs/0707.4674
 Physica E 40, 1653 (2008)
 doi:10.1016/j.physe.2007.10.043

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arXiv