Coupled skyrmion breathing modes in synthetic ferri- And antiferromagnets

Martin Lonsky, Axel Hoffmann

Research output: Contribution to journalArticlepeer-review

Abstract

We present micromagnetic simulations of the dynamic GHz-range resonance modes of skyrmions excited by either out-of-plane AC magnetic fields or spin torques in prototypical synthetic ferri- and antiferromagnetic trilayer structures. The observed features in the calculated power spectra exhibit a systematic dependence on the coupling strength between the individual magnetic layers and are related to pure in-phase and antiphase breathing modes as well as to hybridizations of breathing and spin-wave modes that are characteristic for the considered circular-shaped geometry. The experimental detection of these resonant oscillation modes may provide a means for skyrmion-sensing applications and for the general characterization of skyrmion states in multilayer stacks with antiferromagnetic interlayer exchange coupling.

Original languageEnglish (US)
Article number104403
JournalPhysical Review B
Volume102
Issue number10
DOIs
StatePublished - Sep 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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