Tailoring Magnetic Skyrmions by Geometric Confinement of Magnetic Structures

Zhang, Steven S.-L.; Phatak, C.; Petford-Long, A K; Heinonen, O. G.

doi:10.1063/1.5005904

Title: Tailoring Magnetic Skyrmions by Geometric Confinement of Magnetic Structures

Journal Article · Tue Dec 12 00:00:00 EST 2017 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.5005904· OSTI ID:1412696

Zhang, Steven S.-L. ^[1]; Phatak, C. ^[2]; Petford-Long, A K ^[3]; Heinonen, O. G. ^[4]

Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Northwestern Argonne Inst. of Science and Engineering (NAISE)

Nanoscale magnetic skyrmions have interesting static and transport properties that make them candidates for future spintronic devices. Control and manipulation of the size and behavior of skyrmions is thus of crucial importance. Here, using a Ginzburg-Landau approach, we show theoretically that skyrmions and skyrmion lattices can be stabilized by a spatial modulation of the uniaxial magnetic anisotropy in a thin film of a centro-symmetric ferromagnet. Remarkably, the skyrmion size is determined by the ratio of the exchange length and the period of the spatial modulation of the anisotropy, at variance with conventional skyrmions stabilized by dipolar and Dzyaloshinskii–Moriya interactions.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: AC02-06CH11357; DMR-1406568

OSTI ID:: 1412696

Alternate ID(s):: OSTI ID: 1412997

Journal Information:: Applied Physics Letters, Vol. 111, Issue 24; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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