Sud, A;
Yamamoto, K;
Iihama, S;
Ishibashi, K;
Fukami, S;
Kurebayashi, H;
Mizukami, S;
(2025)
Electrically Controlled Nonlinear Magnon-Magnon Coupling in a Synthetic Antiferromagnet.
Physical Review Letters
, 134
(24)
, Article 246704. 10.1103/sc6y-rxbg.
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Abstract
We investigate the nonlinear coupling between acoustic (ac) and optical (op) modes in the coupled magnetization dynamics of synthetic antiferromagnets, utilizing current-driven resonance spectroscopy. A clear spectral splitting is evident in the ac mode when strongly excited by the radio frequency current at a driving frequency half that of the op mode resonance. The Landau-Lifshitz phenomenology aligns with the experimental observations, affirming the coupling of the radio-frequency-excited ac and op modes through three-magnon mixing. The nonlinearity enables a Rabi-like splitting in an in-plane magnetized synthetic antiferromagnet without breaking its natural symmetries. This discovery holds potential for advancing our understanding of nonlinear antiferromagnetic dynamics.
| Type: | Article |
|---|---|
| Title: | Electrically Controlled Nonlinear Magnon-Magnon Coupling in a Synthetic Antiferromagnet |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/sc6y-rxbg |
| Publisher version: | https://doi.org/10.1103/sc6y-rxbg |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10210374 |
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