| 三角形钠原子团簇中的表面等离激元 |
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| 引用本文： | 尹海峰,曾春花. 三角形钠原子团簇中的表面等离激元[J]. 计算物理, 2014, 31(6): 713-718 |
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| 作者姓名： | 尹海峰 曾春花 |
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| 作者单位： | 1. 凯里学院物理与电子工程学院, 贵州 凯里 556011;2. 凯里学院数学科学学院, 贵州 凯里 556011 |
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| 基金项目： | 国家自然科学基金，贵州省科学技术基金，凯里学院课题 |
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| 摘 要： | 运用含时密度泛函理论研究等边三角形钠原子团簇中的表面等离激元激发.发现:在团簇尺寸较大时,沿三角形底边和底边中垂线方向激发的共振模式不同,然而沿两方向的吸收光谱线形一样,主要吸收峰的共振能量也相同.低能聚集共振在空间引起电场增强的极大值主要分布在三角形的端点附近.
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| 关 键 词： | 等离激元 含时密度泛函理论 团簇 |
| 收稿时间： | 2013-12-20 |
| 修稿时间： | 2014-04-11 |
Plasmon Resonances in Sodium Clusters with Triangle Structure |
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| YIN Haifeng,ZENG Chunhua. Plasmon Resonances in Sodium Clusters with Triangle Structure[J]. Chinese Journal of Computational Physics, 2014, 31(6): 713-718 |
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| Authors: | YIN Haifeng ZENG Chunhua |
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| Affiliation: | 1. College of Physics and Electronic Engineering,Kaili University, Kaili, Guizhou 556011, China;2. School of Mathematical Sciences, Kaili University, Kaili, Guizhou 556011, China |
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| Abstract: | Plasmon excitation in small sodium clusters with triangle structure is studied with time-dependent density functional theory. For relatively larger sodium clusters,along triangle bottom edge and perpendicular bisector of triangle bottom edge,linear shapes of absorption spectra and resonance energies of main absorption peaks are same. However,along these directions,resonance modes of main absorption peaks are different. For the main plasmon mode,field enhancement extrema are located in region of endpoints of the triangle. |
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| Keywords: | plasmon excitation time dependent density functional theory clusters |
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