Generation and annihilation of skyrmions and antiskyrmions in magnetic heterostructures

Sabri Koraltan; Claas Abert; Florian Bruckner; Michael Heigl; Manfred Albrecht; Dieter Suess

doi:10.48550/arXiv.2207.12260

Generation and annihilation of skyrmions and antiskyrmions in magnetic heterostructures

Sabri Koraltan (Corresponding author)
, Claas Abert
, Florian Bruckner
, Michael Heigl
, Manfred Albrecht
, Dieter Suess

Physics of Functional Materials

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

We demonstrate the controlled generation and annihilation of (anti)skyrmions with tunable chirality in magnetic heterostructures by means of micromagnetic simulations. By making use of magnetic (anti)vortices in a patterned ferromagnetic layer, we stabilize (anti)skyrmions in an underlying skyrmionic thin film in a reproducible manner. The stability of the (anti)skyrmion depends on the polarization of the (anti)vortex, whereas their chirality is given by those of the (anti)vortices. We investigate the influence of geometric parameters such as nanodisk radius and film thickness on the stability of the (anti)skyrmions. By introducing the interlayer Dzyaloshinskii-Moriya interaction into our modeling, we predict that the same coupling mechanism works also for chiral skyrmions. Furthermore, we demonstrate that the core coupling between the (anti)vortices and (anti)skyrmions allows deleting and writing of spin objects in a controlled fashion by applying short pulses of in-plane external magnetic fields or charge currents, representing a new key paradigm in skyrmionic devices.

Original language	English
Article number	134401
Number of pages	9
Journal	Physical Review B
Volume	108
Issue number	13
DOIs	https://doi.org/10.48550/arXiv.2207.12260 https://doi.org/10.1103/PhysRevB.108.134401
Publication status	Published - 1 Oct 2023

Funding

The computational results presented have been achieved in part using the Vienna Scientific Cluster (VSC). F.B. and D.S. gratefully acknowledge the Austrian Science Fund (FWF) for support through Grant No. I 4917 (MagFunc). S.K. and C.A. gratefully acknowledge the Austrian Science Fund (FWF) for support through Grant No. P34671 (Vladimir). S.K. and D.S. acknowledge the Austrian Science Fund (FWF) for support through Grant No. I 6267 (CHIRALSPIN). M.A. gratefully acknowledges funding from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) Grant No. 507821284.

Austrian Fields of Science 2012

103015 Condensed matter
103043 Computational physics

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10.48550/arXiv.2207.12260Licence: CC BY 4.0
10.1103/PhysRevB.108.134401Licence: CC BY 4.0

https://phaidra.univie.ac.at/o:2112577Licence: CC BY 4.0

Cite this

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title = "Generation and annihilation of skyrmions and antiskyrmions in magnetic heterostructures",

abstract = "We demonstrate the controlled generation and annihilation of (anti)skyrmions with tunable chirality in magnetic heterostructures by means of micromagnetic simulations. By making use of magnetic (anti)vortices in a patterned ferromagnetic layer, we stabilize (anti)skyrmions in an underlying skyrmionic thin film in a reproducible manner. The stability of the (anti)skyrmion depends on the polarization of the (anti)vortex, whereas their chirality is given by those of the (anti)vortices. We investigate the influence of geometric parameters such as nanodisk radius and film thickness on the stability of the (anti)skyrmions. By introducing the interlayer Dzyaloshinskii-Moriya interaction into our modeling, we predict that the same coupling mechanism works also for chiral skyrmions. Furthermore, we demonstrate that the core coupling between the (anti)vortices and (anti)skyrmions allows deleting and writing of spin objects in a controlled fashion by applying short pulses of in-plane external magnetic fields or charge currents, representing a new key paradigm in skyrmionic devices.",

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AU - Albrecht, Manfred

AU - Suess, Dieter

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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N2 - We demonstrate the controlled generation and annihilation of (anti)skyrmions with tunable chirality in magnetic heterostructures by means of micromagnetic simulations. By making use of magnetic (anti)vortices in a patterned ferromagnetic layer, we stabilize (anti)skyrmions in an underlying skyrmionic thin film in a reproducible manner. The stability of the (anti)skyrmion depends on the polarization of the (anti)vortex, whereas their chirality is given by those of the (anti)vortices. We investigate the influence of geometric parameters such as nanodisk radius and film thickness on the stability of the (anti)skyrmions. By introducing the interlayer Dzyaloshinskii-Moriya interaction into our modeling, we predict that the same coupling mechanism works also for chiral skyrmions. Furthermore, we demonstrate that the core coupling between the (anti)vortices and (anti)skyrmions allows deleting and writing of spin objects in a controlled fashion by applying short pulses of in-plane external magnetic fields or charge currents, representing a new key paradigm in skyrmionic devices.

AB - We demonstrate the controlled generation and annihilation of (anti)skyrmions with tunable chirality in magnetic heterostructures by means of micromagnetic simulations. By making use of magnetic (anti)vortices in a patterned ferromagnetic layer, we stabilize (anti)skyrmions in an underlying skyrmionic thin film in a reproducible manner. The stability of the (anti)skyrmion depends on the polarization of the (anti)vortex, whereas their chirality is given by those of the (anti)vortices. We investigate the influence of geometric parameters such as nanodisk radius and film thickness on the stability of the (anti)skyrmions. By introducing the interlayer Dzyaloshinskii-Moriya interaction into our modeling, we predict that the same coupling mechanism works also for chiral skyrmions. Furthermore, we demonstrate that the core coupling between the (anti)vortices and (anti)skyrmions allows deleting and writing of spin objects in a controlled fashion by applying short pulses of in-plane external magnetic fields or charge currents, representing a new key paradigm in skyrmionic devices.

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Generation and annihilation of skyrmions and antiskyrmions in magnetic heterostructures

Abstract

Funding

Austrian Fields of Science 2012

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Binary information represented by chiral spin textures

Very Largescale Distributed Micromagnetic Research Tools

MagFunc: Non-Reciprocal 3D Architectures for Magnonic Functionalities

Cite this

Generation and annihilation of skyrmions and antiskyrmions in magnetic heterostructures

Abstract

Funding

Austrian Fields of Science 2012

Access to Document

Other files and links

Fingerprint

Projects

Binary information represented by chiral spin textures

Very Largescale Distributed Micromagnetic Research Tools

MagFunc: Non-Reciprocal 3D Architectures for Magnonic Functionalities

Cite this