Isotropy of optical excitations in few-layer graphenes

被引：3

作者：

Lee, S. H. ^{[1
]}

Shyu, F. L. ^{[2
]}

Chiu, C. W. ^{[1
]}

Lin, M. F. ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan

[2] ROC Mil Acad, Dept Phys, Kaohsiung 830, Taiwan

来源：

PHYSICS LETTERS A | 2010年 / 374卷 / 34期

关键词：

Few-layer graphene; Optical excitation; Isotropy; WALLED CARBON NANOTUBES; NANOGRAPHITE RIBBONS; MAGNETIC-PROPERTIES; GRAPHITE; SPECTRA; NANORIBBONS;

D O I：

10.1016/j.physleta.2010.06.061

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The geometric and the most band structures of monolayer and AB-stacked bilayer graphenes exhibit strong anisotropy. Nevertheless, the absorption spectra are isotropic for the polarization vector on graphene plane. The velocity matrix elements dominate this property. These results suggest that AA- and AB-stacked few-layer graphenes and graphites manifest this feature. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3594 / 3597

页数：4

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