Abstract—

The results of the study of the peculiarities of changes in the electrophysical, optical, and plasmonic properties of ultrathin metallic films during the percolation transition from an islet structure to a continuous one have been presented. It has been shown that the change in electrical conductivity of thin Ti and Pt films above the percolation threshold during their condensation can be well described in the framework of the classical percolation theory. The influence of percolation transition in Au metal films on the change of plasmon resonance type from a surface (propagating plasmon-polaritons) to a localized one has been investigated. It has been shown that there is a decrease in the Q-factor of the resonance of surface plasmonic-polaritons during the transition of the film to the granular state near the percolation transition caused by the emergence of conditions for the excitation of localized plasmons. The percolation threshold has been determined for all studied coatings.

中文翻译：

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渗透转变对超薄金属膜导电和光学性能的影响

摘要-

提出了从胰岛结构到连续结构的渗滤过渡过程中，超薄金属膜的电物理，光学和等离激元性质变化的特性的研究结果。已经表明，在经典的渗流理论的框架中，可以很好地描述Ti和Pt薄膜在冷凝过程中高于渗流阈值的电导率变化。研究了金金属膜中的渗流转变对从表面（传播的等离激元-极化子）到局部的等离振子共振类型的变化的影响。已经表明，在由渗入局部等离激元的条件的出现引起的膜向渗流转变附近的颗粒态转变期间，表面等离激元-极化子的共振的Q因子减小。已经为所有研究的涂料确定了渗滤阈值。