Optical properties of graphene nanoribbon in a spatially modulated magnetic field

被引：9

作者：

Wu, Jhao-Ying ^{[1
]}

Chen, Li-Han ^{[1
]}

Li, To-Sing ^{[2
]}

Lin, Ming-Fa ^{[1
]}

机构：

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

[2] Kun Shan Univ, Dept Elect Engn, Tainan 710, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 03期

关键词：

absorption coefficients; band structure; graphene; nanostructured materials; wave functions; ELECTRONIC-PROPERTIES;

D O I：

10.1063/1.3467038

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The low-frequency optical response of graphene nanoribbons can be enhanced and tuned by a spatially modulated magnetic field. The absorption spectrum exhibits rich asymmetric peaks corresponding to the oscillatory behavior in energy bands. The optical selection rule, dominated by magnetic and quantum confinements, is clarified by examining state wave functions. The dependence of the optical excitations on field strength and period is studied as well. These results provide possibility for employing graphene nanoribbons in future optoelectronic applications. (C) 2010 American Institute of Physics. [doi:10.1063/1.3467038]

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页数：3

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