Terahertz ratchet in graphene two-dimensional metamaterial formed by a patterned gate with an antidot array

DOI to cite this document:: 10.5283/epub.75227

Yahniuk, I. ; Hild, Marcel ; Golub, Leonid E.

; Amann, Julia ; Eroms, Jonathan

; Weiss, Dieter ; Kang, Wun-Hao ; Liu, Ming-Hao

; Watanabe, Kenji

; Taniguchi, Takashi ; Ganichev, Sergey

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Date of publication of this fulltext: 18 Mar 2025 09:45

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Abstract

We report the observation of the terahertz-induced ratchet effect in graphene-based two-dimensional (2D) metamaterials. The metamaterial consists of a graphite gate patterned with an array of triangular antidots placed under a graphene monolayer. We show that the ratchet current appears due to the noncentrosymmetry of the periodic structure unit cell. The ratchet current is generated owing to the ...