Optical response of finite-length carbon nanotubes

Details Optical response of finite-length carbon nanotubes Optical response of finite-length carbon nanotubes

2009-09-10

arxiv.org/abs/0909.1908v1

J. Phys. Soc. Jpn. 78 (2009) 114708

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 9 figures, to be published in J. Phys. Soc. Jpn

Scientific paper

10.1143/JPSJ.78.114708

Optical response of finite-length metallic carbon nanotubes is calculated including effects of induced edge charges in a self-consistent manner. The results show that the main resonance corresponding to excitation of the fundamental plasmon mode with wave vector $\pi/l$ with $l$ being the tube length is quite robust and unaffected. This arises because the strong electric field associated with edge charges is screened and decays rapidly inside the nanotube. For higher-frequency resonances, the field starts to be mixed and tends to shift resonances to higher frequencies.

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