Optical Absorption by Interlayer Density Excitations in Bilayer Graphene

被引：16

作者：

Ando, Tsuneya ^{[1
]}

Koshino, Mikito ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2009年 / 78卷 / 10期

关键词：

graphene; bilayer; two-dimensional graphite; optical transition; depolarization effect; dynamical screening; 2-DIMENSIONAL GRAPHITE SYSTEM; CARBON NANOTUBES; ELECTRONIC-PROPERTIES; BAND STRUCTURE; CONDUCTIVITY; TRANSPORT; STATES; LAYER;

D O I：

10.1143/JPSJ.78.104716

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The optical absorption spectrum for light with electric field perpendicular to a bilayer graphene is shown to be quite different from that for parallel polarization. This arises partly from the difference in the selection rule and from the important depolarization effect due to induced polarization. The depolarization effect is most prominent for the sharp transition between the lowest to the first excited conduction band, which are almost parallel to each other.

引用

页数：7

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