Surface plasmon dispersion relation at an interface between thin metal film and dielectric using a quantum hydrodynamic model
Surface plasmon dispersion relation at an interface between thin metal film and dielectric using a quantum hydrodynamic model
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使用量子流体动力学模型研究薄金属膜和电介质之间界面的表面等离子体色散关系
DOI:
10.1016/j.optcom.2017.06.005
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发表时间:
2017-11
期刊:
影响因子:
--
通讯作者:
B. Guo
中科院分区:
文献类型:
--
作者:
Y. Zhang;M. X. Gao;B. Guo
The plasmon excited at the surface of a thin metal film covering on a semi-infinite dielectric substrate is investigated in detailed. The surface plasmon dispersion relation is derived and presented by using the quantum hydrodynamic theory with taking into the quantum statistical and quantum diffraction effects. The effects of the thin metal film character r s and the dielectric constant ε 1 on the dispersion relations are shown and discussed, ie, without and with quantum effects. The results show that increasing r s weakens the quantum effects while increasing ε 1 can enhance the quantum effects. In addition, the plasmon dispersion relation with quantum effects is also compared to a classical model. This simple structure proposed in the paper with quantum hydrodynamic theory can be used for yielding meaningful results for studying more complex systems related to surface plasmons.
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DOI:
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期刊:
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影响因子:
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影响因子:
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