Effect of a single localized impurity on the local density of states in monolayer and bilayer graphene

被引：118

作者：

Bena, Cristina ^{[1
]}

机构：

[1] CEA Saclay, Serv Phys Theor, F-91190 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.100.076601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页数：4

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