Magneto collective excitations of armchair carbon nanotubes

被引:4
作者
Chiu, CW
Shyu, FL
Chang, CP
Chen, RB
Lin, MF [1 ]
机构
[1] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan
[2] Tainan Womens Coll Art & Technol, Gen Educ Ctr, Tainan, Taiwan
[3] Natl Kaohsiung Inst Marine Technol, Gen Educ Ctr, Kaohsiung, Taiwan
关键词
magnetoplasmons; dielectric function; carbon nanotube;
D O I
10.1016/j.physe.2003.12.103
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Magneto single-particle and collective excitations of armchair carbon nanotubes are studied within the RPA. They strongly depend on the angular momentum (L), the momentum (q), and the magnitude (phi) and the direction (alpha) of magnetic field. The L = 0 mode has lower excitation frequencies, higher excitation intensity, stronger q-dependence, and smaller critical momentum, as compared with the L = 1 mode. The plasmon frequency of L = 0 mode increases (decreases) with phi (alpha), while the strength exhibits the opposite behaviour. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:700 / 703
页数:4
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