Oscillator Strength of Metallic Carbon Nanotubes : Condensed Matter: Electronic Properties, etc.
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概要
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Based on the tight binding method with a hopping integral between the nearest-neighbor atoms, an oscillator strength ∫^∞_0dωReσ(ω) is discussed for armchair and metallic zigzag carbon nanotubes. The formulae of the oscillator strength are derived for both types of nanotubes and are compared with the result obtained by a linear chain model. In addition, the doping dependence is investigated in the absence of the Coulomb interaction. It is shown that the oscillator strength of each carbon nanotube shows qualitatively the same doping dependence, but the fine structure is different due to its own peculiar band structure. Some relations independent of the radius of the tube are derived, and a useful formula for determining the amount of doping is proposed.
- 社団法人日本物理学会の論文
- 2001-01-15
著者
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Yoshioka Hideo
Department of Physics, Nagoya University
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Yoshioka H
Department Of Materials Science And Engineering Kyoto Universit
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Yoshioka H
Nara Women's Univ. Nara
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Yoshioka Hideo
Department Of Physics Nara Women's University
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Yoshioka Hideo
Department Of Physics Faculty Of Science University Of Tokyo
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Yoshioka Hideo
Department Of Oral And Maxillofacial Surgery Osaka Rosai Hospital
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