Please use this identifier to cite or link to this item:
Title: Route to form skyrmions in soft magnetic films
Authors: Navas, D.
Verba, R.V.
Hierro-Rodriguez, A.
Bunyaev, S.A.
Zhou, X. 
Adeyeye, A.O. 
Dobrovolskiy, O.V.
Ivanov, B.A.
Guslienko, K.Y.
Kakazei, G.N.
Issue Date: 2019
Publisher: American Institute of Physics Inc.
Citation: Navas, D., Verba, R.V., Hierro-Rodriguez, A., Bunyaev, S.A., Zhou, X., Adeyeye, A.O., Dobrovolskiy, O.V., Ivanov, B.A., Guslienko, K.Y., Kakazei, G.N. (2019). Route to form skyrmions in soft magnetic films. APL Materials 7 (8) : 81114. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Magnetic skyrmions which are topologically nontrivial magnetization configurations have attracted much attention recently due to their potential applications in information recording and signal processing. Conventionally, magnetic skyrmions are stabilized by chiral bulk or interfacial Dzyaloshinskii-Moriya interaction (DMI) in noncentrosymmetric B20 bulk crystals (at low temperatures) or ultrathin magnetic films with out-of-plane magnetic anisotropy (at room temperature), respectively. The skyrmion stability in the ultrathin films relies on a delicate balance of their material parameters that are hard to control experimentally. Here, we propose an alternate approach to stabilize a skyrmion in ferromagnetic media by modifying its surroundings in order to create strong dipolar fields of the radial symmetry. We demonstrate that artificial magnetic skyrmions can be stabilized even in a simple media such as a continuous soft ferromagnetic film, provided that it is coupled to a hard magnetic antidot matrix by exchange and dipolar interactions, without any DMI. N閑l skyrmions, either isolated or arranged in a 2D array with a high packing density, can be stabilized using antidot as small as 40 nm in diameter for soft magnetic films made of Permalloy. When the antidot diameter is increased, the skyrmion configuration transforms into a curled one, becoming an intermediate between the N閑l and Bloch skyrmions. In addition to skyrmions, the considered nanostructure supports the formation of nontopological magnetic solitons that may be regarded as skyrmions with a reversed core. � 2019 Author(s).
Source Title: APL Materials
ISSN: 2166532X
DOI: 10.1063/1.5093371
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1063_1_5093371.pdf2.38 MBAdobe PDF




checked on Feb 3, 2023

Page view(s)

checked on Feb 2, 2023

Google ScholarTM



This item is licensed under a Creative Commons License Creative Commons