Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene

被引：85

作者：

Min, Hongki ^{[1
,2
,3
]}

MacDonald, A. H. ^{[3
]}

机构：

[1] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Maryland NanoCtr, College Pk, MD 20742 USA

[3] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 06期

关键词：

BAND-STRUCTURE; GRAPHITE;

D O I：

10.1103/PhysRevLett.103.067402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the origin of the universal optical conductivity in a normal N-layer graphene multilayer is an emergent chiral symmetry which guarantees that sigma(omega)=N sigma(uni) in both low and high-frequency limits. [sigma(uni)=(pi/2)e(2)/h]. We use this physics to relate intermediate frequency conductivity trends to qualitative characteristics of the multilayer stacking sequence.

引用

页数：4

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