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20 August 2020 Skyrmion nucleation in antiferromagnetic films
Namita Bindal, Brajesh Kumar Kaushik
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Proceedings Volume 11470, Spintronics XIII; 114703Z (2020) https://doi.org/10.1117/12.2568333
Event: SPIE Nanoscience + Engineering, 2020, Online Only
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Abstract
Magnetic skyrmions are chiral spin textures which are topologically stable entities. These are the promising candidates for data storage and logic devices owing to nanoscale size and remarkably low current density required to drive them in contrast to the magnetic domain walls. Antiferromagnetic (AFM) skyrmions are spin textures with equal and opposite topological charge in each sub-lattice leading to cancellation of Magnus force in contrary to ferromagnetic (FM) skyrmions that exhibits skyrmion (SkHE) Hall effect. FM skyrmions also lacks behind the AFM skyrmions by virtue of their sensitivity towards the stray fields. The formation of skyrmions in magnetic materials possessing broken inversion symmetry is subject to material parameters. Therefore, in this paper, we have demonstrated the nucleation of AFM skyrmions by injection of spin polarized current and effect of tuning the magnetic anisotropy and Dzyaloshinskii-Moriya interaction (DMI) constant on skyrmion nucleation. The variation of velocity w.r.t. the applied current density in a nanotrack is also investigated.
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Namita Bindal and Brajesh Kumar Kaushik "Skyrmion nucleation in antiferromagnetic films", Proc. SPIE 11470, Spintronics XIII, 114703Z (20 August 2020); https://doi.org/10.1117/12.2568333
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KEYWORDS
Magnetism
Anisotropy
Ferromagnetics
Thin films
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