• 文献标题:   Extend the omnidirectional electronic gap of Thue-Morse aperiodic gapped graphene superlattices
  • 文献类型:   Article
  • 作  者:   ZHANG ZR, LI HQ, GONG ZJ, FAN YC, ZHANG TQ, CHEN H
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS LETTERS
  • ISSN:   0003-6951 EI 1077-3118
  • 通讯作者地址:   Tongji Univ
  • 被引频次:   19
  • DOI:   10.1063/1.4772209
  • 出版年:   2012

▎ 摘  要

An effective way used to extend omnidirectional electronic gap (OEG) by using Thue-Morse gapped graphene superlattice (GSL) heterostructure is proposed. The heterostructure consists of different Thue-Morse gapped graphene superlattices with different width ratios of potentials. The optimal potential width ratios of constituent Thue-Morse gapped graphene superlattices are easy to be established owing to the lower and upper energy edges of omnidirectional electronic gap depend on the width ratio of potentials. Furthermore, the omnidirectional electronic gap is independence of structure order, thus we can use different optimal Thue-Morse gapped graphene superlattices of any structure order to form a heterostructure to extend this gap as desired. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4772209]