Plasmons and the spectral function of graphene

被引：238

作者：

Polini, Marco ^{[1
,2
]}

Asgari, Reza ^{[3
]}

Borghi, Giovanni ^{[1
,2
]}

Barlas, Yafis ^{[4
]}

Pereg-Barnea, T. ^{[4
]}

MacDonald, A. H. ^{[4
]}

机构：

[1] NEST CNR INFM, I-56126 Pisa, Italy

[2] Scuola Normale Super Pisa, I-56126 Pisa, Italy

[3] Sch Phys, Inst Studies Theoret Phys & Math, Tehran 193955531, Iran

[4] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.77.081411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a theoretical study of the influence of electron-electron interactions on the one-particle Green's function of a doped graphene sheet based on the random-phase approximation and on graphene's massless Dirac equation continuum model. We find that states near the Dirac point interact strongly with plasmons with a characteristic frequency omega(star)(pl) that scales with the sheet's Fermi energy and depends on its interaction coupling constant alpha(gr), partially explaining prominent features of recent angle-resolved photoemission spectroscopy data.

引用

页数：4

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