Hild, Marcel and Moench, Erwin and Golub, Leonid E. and Dmitriev, Ivan A. and Yahniuk, Ivan and Amann, Kerstin and Amann, Julia and Eroms, Jonathan and Wunderlich, Joerg and Weiss, Dieter and Consejo, C. and Bray, C. and Maussang, K. and Teppe, F. and Gumenjuk-Sichevska, J. and Watanabe, K. and Taniguchi, T. and Ganichev, Sergey D. (2024) Terahertz and gigahertz magnetoratchets in graphene-based two-dimensional metamaterials. PHYSICAL REVIEW B, 110 (12): 125303. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
We report on the observation and study of the magnetoratchet effect in a graphene-based two-dimensional metamaterial formed by a graphite gate that is placed below a graphene monolayer and patterned with an array of triangular antidots. We demonstrate that terahertz/gigahertz excitation of the metamaterial leads to sign-alternating magneto-oscillations with an amplitude that exceeds the ratchet current at zero magnetic field by orders of magnitude. The oscillations are shown to be related to the Shubnikov-de Haas effect. In addition to the giant ratchet current oscillations, we detect resonant ratchet currents caused by the cyclotron and electron spin resonances. The results are well described by the developed theory considering the magnetoratchet effect caused by the interplay of the near-field radiation and the nonuniform periodic electrostatic potential of the metamaterial controlled by the gate voltages.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Jonathan Eroms Physics > Institute of Experimental and Applied Physics > Prof. Jörg Wunderlich |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Dec 2025 08:22 |
| Last Modified: | 09 Dec 2025 08:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64680 |
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