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Terahertz spin ratchet effect in magnetic metamaterials

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Hild, Marcel ; Golub, Leonid E. ; Fuhrmann, A. ; Otteneder, Maximilian ; Kronseder, Matthias ; Matsubara, M. ; Kobayashi, T. ; Oshima, D. ; Honda, A. ; Kato, T. ; Wunderlich, Jörg ; Back, Christian H. ; Ganichev, Sergey D.

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Date of publication of this fulltext: 24 Jul 2023 07:56


We report on spin ratchet currents driven by terahertz radiation electric fields in a Co/Pt magnetic metamaterial formed by triangle-shaped holes forming an antidots lattice and subjected to an external magnetic field applied perpendicularly to the metal film plane. We show that for a radiation wavelength substantially larger than the period of the antidots array the radiation causes a ...


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