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Controlled skyrmion nucleation in extended magnetic layers using a nanocontact geometry

Journal article
Authors P. Durrenfeld
Y. B. Xu
Johan Åkerman
Y. Zhou
Published in Physical Review B
Volume 96
Issue 5
ISSN 2469-9950
Publication year 2017
Published at Department of Physics (GU)
Language English
Links doi.org/10.1103/PhysRevB.96.054430
Keywords hall nano-oscillator, spin, driven, Physics
Subject categories Physical Sciences

Abstract

We propose and numerically simulate a spintronic device layout consisting of a nanocontact on top of an extended Co/Pt bilayer. The interfacial Dzyaloshinskii-Moriya interaction in such bilayer systems can lead to the possible existence of metastable skyrmions. A small dc current injected through the nanocontact enables the manipulation of the size as well as the annihilation of an initially present skyrmion, while ps-long current pulses allow for the controlled nucleation of single skyrmions underneath the nanocontact. The results are obtained from micromagnetic simulations and can be potentially used for future magnetic storage implementations.

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