Breathing modes of skyrmion strings in a synthetic antiferromagnet multilayer

Skyrmions are small topologically protected magnetic structures that hold promise for applications from data storage to neuromorphic computing and they have been shown to possess internal microwave frequency excitations. Skyrmions in a synthetic antiferromagnet have been predicted to be smaller and...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2023-03, Vol.133 (11)
Main Authors: Barker, Christopher E. A., Haltz, Eloi, Moore, Thomas. A., Marrows, Christopher H.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Applied physics
Data storage
Ferromagnetism
Hypothetical particles
Microwave frequencies
Multilayers
Particle theory
Phase relationships
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Skyrmions are small topologically protected magnetic structures that hold promise for applications from data storage to neuromorphic computing and they have been shown to possess internal microwave frequency excitations. Skyrmions in a synthetic antiferromagnet have been predicted to be smaller and faster than their ferromagnetic equivalents and also shown to possess more internal modes. In this work, we consider the breathing modes of skyrmions in a four repetition synthetic antiferromagnetic multilayer by means of micromagnetic simulations and examine the further splitting of the modes into different arrangements of out-of-phase, in-phase, and modes with more complex phase relationships. This results in a lowering of frequencies, which is promising for skyrmion sensing applications in a synthetic antiferromagnet.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0142772