Electronic Collective Excitations in AB-Stacked Nanographite Ribbons
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概要
- 論文の詳細を見る
The inter-π-band electronic excitations of AB-stacked nanographite ribbons are studied within the self-consistent-field approach. Such excitations directly reflect the characteristics of the π-electronic structure. They depend on the magnitude (q) and the direction (θ) of the transferred momentum, the edge structure, and the stacking sequence. The loss function exhibits several peak structures. The pronounced peak, with frequency larger than 5 eV, is identified as the π-electronic collective excitations. The π plasmons exhibit highly anisotropic behavior. They are almost absent, when the transferred momentum is perpendicular to the graphitic plane (θ=90°). However, their frequencies at small θ are not sensitive to the change in the stacking sequence.
- Physical Society of Japanの論文
- 2001-09-15
著者
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Lin Ming-fa
Department Of Physics National Cheng Kung University
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Shyu Feng-lin
Department Of Electronics Engineering Fortune Institute Of Technology
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Chen Ming-yang
Department Of Physics National Cheng Kung University
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Shyu Feng-Lin
Department of Physics, Chinese Military Academy, Kaohsiung, Taiwan 830, R.O.C.
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Chen Ming-Yang
Department of Physics, National Cheng Kung University, Tainan, Taiwan 701, R.O.C.
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Lin Ming-Fa
Department of Physics, National Cheng Kung University, Tainan, Taiwan 701, R.O.C.
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