The generation of significant photocurrents observed in plasmonic metasurfaces is interesting from a fundamental point of view and promising for applications in plasmon-based electronics and plasmonic sensors with compact electrical detection. We show that photoinduced voltages in strongly modulated plasmonic surfaces demonstrate a highly asymmetric angular dependence with polarity switching around the plasmon resonance conditions. The effects are tentatively attributed to coupling between localized and propagating plasmons.

中文翻译：

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具有急剧极性切换的等离子拖曳效应

从基本的角度来看，在等离子体超表面中观察到的显着光电流的产生是有趣的，并且有望应用于基于等离子体的电子学和具有紧凑电检测的等离子体传感器。我们表明，强烈调制的等离子体表面中的光致电压表现出高度不对称的角度依赖性，极性在等离子体共振条件周围切换。这些影响暂时归因于局部等离子体和传播等离子体之间的耦合。