Sud, A;
Zollitsch, CW;
Kamimaki, A;
Dion, T;
Khan, S;
Iihama, S;
Mizukami, S;
(2020)
Tunable magnon-magnon coupling in synthetic antiferromagnets.
Physical Review B
, 102
(10)
, Article 100403(R). 10.1103/PhysRevB.102.100403.
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Abstract
In this work, we study magnon-magnon coupling in synthetic antiferromagnets (SyAFs) using microwave spectroscopy at room temperature. Two distinct spin-wave modes are clearly observed and are hybridized at degeneracy points. We provide a phenomenological model that captures the coupling phenomena and experimentally demonstrate that the coupling strength is controlled by the out-of-plane tilt angle as well as the interlayer exchange field. We numerically show that a spin-current mediated damping in SyAFs plays a role in influencing the coupling strength.
| Type: | Article |
|---|---|
| Title: | Tunable magnon-magnon coupling in synthetic antiferromagnets |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.102.100403 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.102.100403 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Magnetism, Magnetization dynamics, Magnons, Spin current, Spin dynamics, Magnetic multilayers, Multilayer thin films |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng 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-pp.ucl.ac.uk/id/eprint/10110613 |
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