Switching of a target skyrmion by a spin-polarized current

We study the spin-transfer-induced dynamics of a target skyrmion in the free layer of nanopillar structures, in which the polarizer layer has a perpendicular magnetization. By using micromagnetic simulations, it is shown that three distinct modes can be excited. As a consequence of the evolution of...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2015-03, Vol.91 (9), Article 094425
Main Authors: Liu, Yan, Du, Haifeng, Jia, Min, Du, An
Format: Article
Language:English
Subjects:
Condensed matter
Evolution
Hypothetical particles
Magnetization
Particle theory
Polarizers
Simulation
Switching
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Summary:We study the spin-transfer-induced dynamics of a target skyrmion in the free layer of nanopillar structures, in which the polarizer layer has a perpendicular magnetization. By using micromagnetic simulations, it is shown that three distinct modes can be excited. As a consequence of the evolution of the lowest frequency mode, breathing mode, the polarized direction of the skyrmion core can be switched via Bloch point injection and propagation.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.91.094425