Influence of defects on the electronic structures of bilayer graphene

SURFACE SCIENCE

卷:644

Article

Kishimoto, Ken¹  Okada, Susumu¹ 

[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

关键词: Bilayer graphene;    Band gap;    Electronic structure;    Interlayer hybridization;   

DOI  :  10.1016/j.susc.2015.08.036

来源: Elsevier

【 摘 要 】

Based on first-principles total-energy calculation, we investigate the electronic structures of bilayer graphene, one of which layers possesses atomic or topological defects, to explore the possibility of band gap engineering of graphene by means of physisorpfion of defective graphene. Our calculations show that the pristine graphene layer possesses a finite energy gap between bonding and antibonding it states because of the potential undulation caused by the other graphene layers with defects. We also found that the gap values strongly depend on the defect species and their mutual arrangement with respect to the pristine layer. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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