Spectroscopic signatures of massless gap opening in graphene

被引：28

作者：

Benfatto, L. ^{[1
,2
,3
]}

Cappelluti, E. ^{[2
,3
]}

机构：

[1] Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy

[2] CNR INFM, SMC INFM, I-00185 Rome, Italy

[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.78.115434

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gap opening in graphene is usually discussed in terms of a semiconductinglike spectrum, where the appearance of a finite gap at the Dirac point is accompanied by a finite mass for the fermions. In this paper we propose a gap scenario from graphene which preserves the massless characters of the carriers. This approach explains recent spectroscopic measurements carried out in epitaxially grown graphene, ranging from photoemission to optical transmission.

引用

页数：5

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