Pressure- and orientation-dependent linear optical absorption spectra of radially deformed single-walled carbon nanotubes

被引：14

作者：

Liu, Guogao ^{[2
]}

Wang, Xiao ^{[3
]}

Chen, Jiangwei ^{[1
,4
,5
]}

Lu, Huaixian ^{[4
,5
]}

机构：

[1] Nanjing Artillery Acad, Nanjing 211132, Peoples R China

[2] Hohai Univ, Dept Math & Phys, Changzhou Coll, Changzhou 213022, Peoples R China

[3] Coll Nat Sci, PLAUST, Nanjing 210010, Peoples R China

[4] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[5] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2008年 / 245卷 / 04期

关键词：

D O I：

10.1002/pssb.200743164

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Based upon the Slater-Koster tight-binding model and the gradient approximation, we investigate the linear optical properties of radially deformed single-walled carbon nanotubes (SWNTs). It is found that, for the armchair tubes, the radial pressure may make the absorption peaks exhibited in the perfect tube shift to lower energy and eventually vanish, which is consistent with the experimental results observed in the optical spectra of squashed SWNT films. In addition, a lot of new and pressure- and orientation-dependent absorption peaks emerge in the optical spectra of the radially deformed tubes. Finally, for comparison, the dependence of optical properties of deformed tubes on chirality is discussed simply. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：689 / 694

页数：6

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