Many-body exchange-correlation effects in graphene

被引：12

作者：

Hwang, E. H. ^{[1
]}

Hu, Ben Yu-Kuang ^{[2
]}

Das Sarma, S. ^{[1
]}

机构：

[1] Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA

[2] Univ Akron, Dept Phys, Akron, OH 44325 USA

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 05期

关键词：

graphene; self-energy; quasiparticle properties; RPA;

D O I：

10.1016/j.physe.2007.10.043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 give energy dependent lifetimes that are qualitatively different from those of parabolic-band semiconductors. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1653 / 1655

页数：3

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