Optical properties of carbon nanotubes

被引:92
作者
Wan, XG [1 ]
Dong, JM
Xing, DY
机构
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210008, Peoples R China
[2] Ctr Adv Studies Sci & Technol Microstruct, Nanjing 210093, Peoples R China
[3] Nanjing Univ, Dept Phys, Nanjing 210008, Peoples R China
来源
PHYSICAL REVIEW B | 1998年 / 58卷 / 11期
关键词
D O I
10.1103/PhysRevB.58.6756
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Using the extended Hubbard model and sum-over-state method, we have calculated the linear polarizability alpha and the third-order nonlinear polarizability gamma for carbon nanotubes with finite lengths. We find that the chiral symmetry of nanotubes with finite length has a great effect on their optical properties. For example, the finite length (n,m) tubes with n-m being not a multiple of 3, will have smaller alpha and much smaller gamma values than other finite length tubes.
引用
收藏
页码:6756 / 6759
页数:4
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