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Realization of ordered magnetic skyrmions in thin films at ambient conditions

Title
Realization of ordered magnetic skyrmions in thin films at ambient conditions
Authors
Desautels, Ryan D.DeBeer-Schmitt, LisaMontoya, Sergio A.Borchers, Julie A.Je, Soong-GeunTang, NanIm, Mi-YoungFitzsimmons, Michael R.Fullerton, Eric E.Gilbert, Dustin A.
Issue Date
2019-10
Citation
Physical Review Materials, 3(10)
Type
Article
Article Type
Article
Keywords
LATTICETRANSITIONDYNAMICS
ISSN
2475-9953
Abstract
Magnetic skyrmions have captivated physicists due to their topological nature and novel physical properties. In addition, skyrmions hold significant promise for future information technologies. A key barrier to realizing skyrmion-based devices has been stabilizing these spin structures under ambient conditions. In this paper, we demonstrate that the tunable magnetic properties of amorphous Fe/Gd mulitlayers enable the formation of skyrmion lattices which are stable over a large temperature and magnetic field parameter space, including room temperature and zero magnetic field. These skyrmions, having a hybrid nature displaying both Bloch-type and Néel-type characteristics, are stabilized by dipolar interactions rather than Dzyaloshinskii-Moriya interactions, typically considered a requirement for the generation of skyrmions. Small angle neutron scattering (SANS) was used in combination with soft x-ray microscopy to provide a unique, multiscale probe of the local and long-range order of these structures. The hexagonal lattice seen in SANS results from the hybrid skyrmion picture obtained with micromagnetic simulations. These results identify a pathway to engineer controllable skyrmion phases in thin film geometries which are stable at ambient conditions. © 2019 American Physical Society.
URI
http://hdl.handle.net/20.500.11750/10852
DOI
10.1103/PhysRevMaterials.3.104406
Publisher
American Physical Society
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


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