Reciprocal skin effect and its realization in a topolectrical circuit*

The non-Hermitian Skin effect constitutes a new paradigm in synthetic metamaterial research. The established notion of the Skin effect requires specifically tailored gain and loss conspiring with the breaking of reciprocity. In this talk we present a model which shows extensive eigenmode localization at its boundaries while preserving reciprocity. In contrast to non-reciprocal implementations of the Skin effect requiring external energy supply, this model can be realized with exclusively passive components. We demonstrate this novel phenomenon in a passive RLC circuit network. The reciprocal Skin effect suggests itself for realizations in further metamaterial platforms with limited availability of active components.

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