Dynamical gap generation in graphene nanoribbons: An effective relativistic field theoretical model

被引：17

作者：

Chaves, A. J. ^{[1
]}

Lima, G. D. ^{[2
]}

de Paula, W. ^{[1
]}

Cordeiro, C. E. ^{[3
]}

Delfino, A. ^{[3
]}

Frederico, T. ^{[1
]}

Oliveira, O. ^{[1
,4
]}

机构：

[1] Inst Tecnol Aeronaut, Dept Fis, BR-12228900 Sao Jose Dos Campos, Brazil

[2] Univ Fed Piaui, Dept Fis, BR-64049550 Teresina, Piaui, Brazil

[3] Univ Fed Fluminense, Inst Fis, BR-24210340 Rio De Janeiro, Brazil

[4] Univ Coimbra, Dept Fis, P-3004516 Coimbra, Portugal

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 15期

基金：

巴西圣保罗研究基金会;

关键词：

WORK-FUNCTIONS; TRANSPORT;

D O I：

10.1103/PhysRevB.83.153405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show that the assumption of a nontrivial zero band gap for a graphene sheet within an effective relativistic field theoretical model description of interacting Dirac electrons on the surface of graphene describes the experimental band gap of graphene nanoribbons for a wide range of widths. The graphene band gap is dynamically generated, corresponding to a nontrivial gapless solution, found in the limit of an infinitely wide graphene ribbon. The nanoribbon band gap is determined by the experimental graphene work function.

引用

页数：4

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