• 文献标题:   Effect of a single localized impurity on the local density of states in monolayer and bilayer graphene
  • 文献类型:   Article
  • 作  者:   BENA C
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007
  • 通讯作者地址:   CEA Saclay
  • 被引频次:   84
  • DOI:   10.1103/PhysRevLett.100.076601
  • 出版年:   2008

▎ 摘  要

We use the T-matrix approximation to analyze the effect of a localized impurity on the local density of states in monolayer and bilayer graphene. For monolayer graphene the Friedel oscillations generated by intranodal scattering obey an inverse-square law, while the internodal ones obey an inverse law. In the Fourier transform this translates into a filled circle of high intensity in the center of the Brillouin zone, and empty circular contours around its corners. For bilayer graphene both types of oscillations obey an inverse law.