Controlling skyrmion bubble confinement by dipolar interactions

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Large skyrmion bubbles in confined geometries of various sizes and shapes are investigated, typically in the range of several micrometers. Two fundamentally different cases are studied to address the role of dipole-dipole interactions: (I) when there is no magnetic material present outside the small geometries and (II) when the geometries are embedded in films with a uniform magnetization. It is found that the preferential position of the skyrmion bubbles can be controlled by the geometrical shape, which turns out to be a stronger influence than local variations in material parameters. In addition, independent switching of the direction of the magnetization outside the small geometries can be used to further manipulate these preferential positions, in particular with respect to the edges. We show by numerical calculations that the observed interactions between the skyrmion bubbles and structure edge, including the overall positioning of the bubbles, can be explained by considering only dipole-dipole interactions.

Original languageEnglish
Article number102402
Number of pages5
JournalApplied Physics Letters
Volume115
Issue number10
DOIs
Publication statusPublished - 2 Sep 2019

Fingerprint

bubbles
dipoles
geometry
interactions
magnetization
magnetic materials
positioning
micrometers

Cite this

@article{4ee19229f6344e2e824da0005d9997c0,
title = "Controlling skyrmion bubble confinement by dipolar interactions",
abstract = "Large skyrmion bubbles in confined geometries of various sizes and shapes are investigated, typically in the range of several micrometers. Two fundamentally different cases are studied to address the role of dipole-dipole interactions: (I) when there is no magnetic material present outside the small geometries and (II) when the geometries are embedded in films with a uniform magnetization. It is found that the preferential position of the skyrmion bubbles can be controlled by the geometrical shape, which turns out to be a stronger influence than local variations in material parameters. In addition, independent switching of the direction of the magnetization outside the small geometries can be used to further manipulate these preferential positions, in particular with respect to the edges. We show by numerical calculations that the observed interactions between the skyrmion bubbles and structure edge, including the overall positioning of the bubbles, can be explained by considering only dipole-dipole interactions.",
author = "Ummelen, {Fanny C.} and Tom Lichtenberg and Swagten, {Henk J.M.} and Bert Koopmans",
year = "2019",
month = "9",
day = "2",
doi = "10.1063/1.5110467",
language = "English",
volume = "115",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "10",

}

Controlling skyrmion bubble confinement by dipolar interactions. / Ummelen, Fanny C.; Lichtenberg, Tom (Corresponding author); Swagten, Henk J.M.; Koopmans, Bert.

In: Applied Physics Letters, Vol. 115, No. 10, 102402, 02.09.2019.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Controlling skyrmion bubble confinement by dipolar interactions

AU - Ummelen, Fanny C.

AU - Lichtenberg, Tom

AU - Swagten, Henk J.M.

AU - Koopmans, Bert

PY - 2019/9/2

Y1 - 2019/9/2

N2 - Large skyrmion bubbles in confined geometries of various sizes and shapes are investigated, typically in the range of several micrometers. Two fundamentally different cases are studied to address the role of dipole-dipole interactions: (I) when there is no magnetic material present outside the small geometries and (II) when the geometries are embedded in films with a uniform magnetization. It is found that the preferential position of the skyrmion bubbles can be controlled by the geometrical shape, which turns out to be a stronger influence than local variations in material parameters. In addition, independent switching of the direction of the magnetization outside the small geometries can be used to further manipulate these preferential positions, in particular with respect to the edges. We show by numerical calculations that the observed interactions between the skyrmion bubbles and structure edge, including the overall positioning of the bubbles, can be explained by considering only dipole-dipole interactions.

AB - Large skyrmion bubbles in confined geometries of various sizes and shapes are investigated, typically in the range of several micrometers. Two fundamentally different cases are studied to address the role of dipole-dipole interactions: (I) when there is no magnetic material present outside the small geometries and (II) when the geometries are embedded in films with a uniform magnetization. It is found that the preferential position of the skyrmion bubbles can be controlled by the geometrical shape, which turns out to be a stronger influence than local variations in material parameters. In addition, independent switching of the direction of the magnetization outside the small geometries can be used to further manipulate these preferential positions, in particular with respect to the edges. We show by numerical calculations that the observed interactions between the skyrmion bubbles and structure edge, including the overall positioning of the bubbles, can be explained by considering only dipole-dipole interactions.

UR - http://www.scopus.com/inward/record.url?scp=85072171692&partnerID=8YFLogxK

U2 - 10.1063/1.5110467

DO - 10.1063/1.5110467

M3 - Article

AN - SCOPUS:85072171692

VL - 115

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 10

M1 - 102402

ER -