Tunable magnon-magnon coupling in synthetic antiferromagnets

A. Sud, C. W. Zollitsch, A. Kamimaki, T. Dion, S. Khan, S. Iihama, S. Mizukami, H. Kurebayashi

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

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.

Original languageEnglish
Article number100403
JournalPhysical Review B
Volume102
Issue number10
DOIs
Publication statusPublished - 2020 Sep

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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