Giant ratchet magneto-photocurrent in graphene lateral superlattices

DOI to cite this document:: 10.5283/epub.52010

Hubmann, Stefan

; Bel'kov, V. V. ; Golub, L. E.

; Kachorovskii, V. Yu.

; Drienovsky, M. ; Eroms, Jonathan

; Weiss, Dieter ; Ganichev, Sergey

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Date of publication of this fulltext: 30 Mar 2022 13:14

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Abstract

We report on the observation of the magnetic quantum ratchet effect in graphene with a lateral dual-grating top gate (DGG) superlattice. We show that the THz ratchet current exhibits sign-alternating magneto-oscillations due to the Shubnikov–de Haas effect. The amplitude of these oscillations is greatly enhanced as compared to the ratchet effect at zero magnetic field. The direction of the ...