Electronic collective excitations in AB-stacked nanographite ribbons

Min-Fa Lin, Ming Yang Chen, Feng Lin Shyu

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)2513-2516
頁數4
期刊Journal of the Physical Society of Japan
70
發行號9
DOIs
出版狀態Published - 2001 九月 1

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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