Journal
PHYSICAL REVIEW APPLIED
Volume 12, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.12.044007
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Funding
- Agence Nationale de la Recherche [ANR-17-CE24-0045]
- DARPA TEE program [MIPR HR0011831554]
- CALIPSOplus funding [730872]
- European Community's Horizon 2020 Framework Programme [730872]
- Agence Nationale de la Recherche (ANR) [ANR-17-CE24-0045] Funding Source: Agence Nationale de la Recherche (ANR)
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Magnetic skyrmions are chiral spin textures that hold great promise as nanoscale information carriers. Since their first observation at room temperature, progress has been made in their current-induced manipulation, with fast motion reported in stray-field-coupled multilayers. However, the complex spin textures with hybrid chiralities and large power dissipation in these multilayers limit their practical implementation and the fundamental understanding of their dynamics. Here, we report on the current-driven motion of Neel skyrmions with diameters in the 100-nm range in an ultrathin Pt/Co/MgO trilayer. We find that these skyrmions can be driven at a speed of 100 m s(-1) and exhibit a drive-dependent skyrmion Hall effect, which is accounted for by the effect of pinning Our experiments are well substantiated by an analytical model of the skyrmion dynamics as well as by micromagnetic simulations including material inhomogeneities. This good agreement is enabled by the simple skyrmion spin structure in our system and a thorough characterization of its static and dynamical properties.
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