2020
DOI: 10.1103/physrevapplied.13.034046
|View full text |Cite
|
Sign up to set email alerts
|

Stabilization of Skyrmions in a Nanodisk Without an External Magnetic Field

Abstract: We study, in the absence of a magnetic field, the stability of skyrmions in a disk-shaped ferromagnetic multilayer in the presence of locally pinned spins at the edge. This particular boundary condition suppresses the formation of helical states yet enhances the stabilization of states with rotational symmetry, such as Néel skyrmions. Numerical simulation shows that the size of the disk is a viable parameter to control the creation and annihilation of skyrmionic states. We also find that the demagnetization fi… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

1
4
0

Year Published

2021
2021
2024
2024

Publication Types

Select...
8

Relationship

2
6

Authors

Journals

citations
Cited by 11 publications
(5 citation statements)
references
References 51 publications
1
4
0
Order By: Relevance
“…: 𝑡 ln 2 /𝜋 : , where 𝑀 9 and t are the saturation magnetization and thickness of the magnetic layer, respectively. For our TmIG film (Supplementary Note 2), we obtain 𝐷 45 ~12 µJ m -2 , a value that is compatible with the interfacial DMI found in TmIG-based heterostructures 16,17,18,19,26 (𝐷 45 further reduces if demagnetizing fields are taken into account 32 ). Interestingly, the low 𝑀 9 of TmIG lowers 𝐷 45 by two orders of magnitude compared to ferromagnets, evidencing the potential of ferrimagnetic garnets for stabilizing chiral structures even with weak DMI.…”
Section: Chirality and Current-induced Nucleation And Motion Of Skyrm...supporting
confidence: 82%
“…: 𝑡 ln 2 /𝜋 : , where 𝑀 9 and t are the saturation magnetization and thickness of the magnetic layer, respectively. For our TmIG film (Supplementary Note 2), we obtain 𝐷 45 ~12 µJ m -2 , a value that is compatible with the interfacial DMI found in TmIG-based heterostructures 16,17,18,19,26 (𝐷 45 further reduces if demagnetizing fields are taken into account 32 ). Interestingly, the low 𝑀 9 of TmIG lowers 𝐷 45 by two orders of magnitude compared to ferromagnets, evidencing the potential of ferrimagnetic garnets for stabilizing chiral structures even with weak DMI.…”
Section: Chirality and Current-induced Nucleation And Motion Of Skyrm...supporting
confidence: 82%
“…In the absence of geometric confinement, the current system requires a perpendicular MCA and additional magnetic field to provide the proper symmetry and energy gain to sustain an outofplane spin alignment and facilitate the formation of Néeltype skyrmions. [35][36][37]56] Yet the formation of bimeron, favoring inplane spin alignment and mainly mediated by the competition between the longranged dipoledipole interaction and single ion magnetic anisot ropy, [38,39] is free from such symmetry requirement and is thus capable of surviving both perpendicular and inplane fields. Figure 2b shows the total energy (E tot ) as a function of the mag netic field.…”
Section: Influence Of Magnetic Field On Spin Texturesmentioning
confidence: 99%
“…The DM interaction in our system arises from a spin-orbit coupling at the interface between a thin magnetic film and substrate such as Fe 3 GeTe 2 /Wse 2 and Fe 3 GeTe 2 itself. For an individual skyrmion in an ultrathin film of thickness d and radius R, the contribution to the magnetic energy from the DM interaction and demagnetization can be estimated as 2π 2 DRd and −2πμ 0 M 2 s WRd, respectively, for a given skyrmion wall width W = πd/4K u [22]. To obtain the final spin state, we consider initial state for the magnetization configuration, namely, random skyrmion and Néel skyrmion.…”
Section: Atomistic Spin Simulationsmentioning
confidence: 99%