Manipulating topological states by imprinting non-collinear spin textures

Scientific Reports
Robert StreubelDenys Makarov

Abstract

Topological magnetic states, such as chiral skyrmions, are of great scientific interest and show huge potential for novel spintronics applications, provided their topological charges can be fully controlled. So far skyrmionic textures have been observed in noncentrosymmetric crystalline materials with low symmetry and at low temperatures. We propose theoretically and demonstrate experimentally the design of spin textures with topological charge densities that can be tailored at ambient temperatures. Tuning the interlayer coupling in vertically stacked nanopatterned magnetic heterostructures, such as a model system of a Co/Pd multilayer coupled to Permalloy, the in-plane non-collinear spin texture of one layer can be imprinted into the out-of-plane magnetised material. We observe distinct spin textures, e.g. vortices, magnetic swirls with tunable opening angle, donut states and skyrmion core configurations. We show that applying a small magnetic field, a reliable switching between topologically distinct textures can be achieved at remanence.

References

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Citations

Mar 5, 2016·The Review of Scientific Instruments·D MitinM Albrecht
Oct 9, 2015·Nature Communications·Dustin A GilbertKai Liu
Jun 24, 2017·Scientific Reports·David Cortés-OrtuñoHans Fangohr
Jan 10, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Marco MalvestutoFulvio Parmigiani
Jul 6, 2019·Journal of Low Temperature Physics·G E VolovikV B Eltsov
Oct 30, 2015·Nanotechnology·D NissenM Albrecht
Nov 18, 2018·Scientific Reports·Alexander G KolesnikovAlexey V Ognev
Oct 28, 2021·Advanced Materials·Denys MakarovOleksandr V Dobrovolskiy

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Methods Mentioned

BETA
X-ray
circular dichroism
electron beam lithography
circular

Software Mentioned

Nmag
MTXM
HLib
XMCD

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