Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets

被引：29

作者：

Lonsky, Martin ^{[1
]}

Hoffmann, Axel

机构：

[1] Univ Illinois, Mat Res Lab, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW B | 2020年 / 102卷 / 10期

关键词：

Antiferromagnetic materials - Antiferromagnetism;

D O I：

10.1103/PhysRevB.102.104403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

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页数：11

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