Stability of skyrmions in perturbed ferromagnetic chiral magnets

Magnetic skyrmions, topological spin textures observed in chiral magnets, have attracted huge interest due to their applications in the field of spintronics. In this work we study the stability of circular isolated skyrmions in ferromagnetic chiral magnets under the influence of different perturbati...

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Autores principales: Osorio, Santiago Antonio, Sturla, Mauricio, Rosales, Héctor Diego, Cabra, Daniel Carlos
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2019
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125619
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id I19-R120-10915-125619
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Physics
Magnet
Field (physics)
Instability
Spintronics
Condensed matter physics
Ferromagnetism
Spin-½
Phase diagram
Skyrmion
spellingShingle Física
Physics
Magnet
Field (physics)
Instability
Spintronics
Condensed matter physics
Ferromagnetism
Spin-½
Phase diagram
Skyrmion
Osorio, Santiago Antonio
Sturla, Mauricio
Rosales, Héctor Diego
Cabra, Daniel Carlos
Stability of skyrmions in perturbed ferromagnetic chiral magnets
topic_facet Física
Physics
Magnet
Field (physics)
Instability
Spintronics
Condensed matter physics
Ferromagnetism
Spin-½
Phase diagram
Skyrmion
description Magnetic skyrmions, topological spin textures observed in chiral magnets, have attracted huge interest due to their applications in the field of spintronics. In this work we study the stability of circular isolated skyrmions in ferromagnetic chiral magnets under the influence of different perturbations and external fields. To this end we develop a general systematic procedure based in a harmonic expansion series of the skyrmion boundary which allows the identification of the breakdown of the skyrmion circular shape on each instability channel independently. We apply our approach to a few representative spin models of actual interest in order to obtain the zero temperature phase diagram, where isolated skyrmions emerge as metastable states. The results presented in this paper are in agreement with properties of isolated skyrmions observed in recent experiments, opening the possibility of extending the analysis to more complex situations.
format Articulo
Preprint
author Osorio, Santiago Antonio
Sturla, Mauricio
Rosales, Héctor Diego
Cabra, Daniel Carlos
author_facet Osorio, Santiago Antonio
Sturla, Mauricio
Rosales, Héctor Diego
Cabra, Daniel Carlos
author_sort Osorio, Santiago Antonio
title Stability of skyrmions in perturbed ferromagnetic chiral magnets
title_short Stability of skyrmions in perturbed ferromagnetic chiral magnets
title_full Stability of skyrmions in perturbed ferromagnetic chiral magnets
title_fullStr Stability of skyrmions in perturbed ferromagnetic chiral magnets
title_full_unstemmed Stability of skyrmions in perturbed ferromagnetic chiral magnets
title_sort stability of skyrmions in perturbed ferromagnetic chiral magnets
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/125619
work_keys_str_mv AT osoriosantiagoantonio stabilityofskyrmionsinperturbedferromagneticchiralmagnets
AT sturlamauricio stabilityofskyrmionsinperturbedferromagneticchiralmagnets
AT rosaleshectordiego stabilityofskyrmionsinperturbedferromagneticchiralmagnets
AT cabradanielcarlos stabilityofskyrmionsinperturbedferromagneticchiralmagnets
bdutipo_str Repositorios
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