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RESEARCH PRODUCT
Modification of Dzyaloshinskii-Moriya-Interaction-Stabilized Domain Wall Chirality by Driving Currents
Frank FreimuthEduardo MartínezS. SenzR. Lo ConteT. SchulzMathias KläuiYuriy MokrousovYuriy MokrousovGurucharan V. KarnadGianluca GubbiottiBerthold Ockersubject
Current (mathematics)Current-inducedGeneral Physics and AstronomyFOS: Physical sciencesSpin currents02 engineering and technology-01 natural sciencesMeasure (mathematics)Spin current0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)ddc:55022 Física010306 general physicsDomain Wall ChiralitySpin-½PhysicsCondensed matter physicsfísicaCondensed Matter - Mesoscale and Nanoscale PhysicsTheoretical predictionsPhysics021001 nanoscience & nanotechnologyMagnetic fieldDomain wall (magnetism)Dzyaloshinskii-Moriya-interaction (DMI)0210 nano-technologyChirality (chemistry)Field-induced domainDzyaloshinskii-Moriya-interactiondescription
We measure and analyze the chirality of Dzyaloshinskii-Moriya-interaction (DMI) stabilized spin textures in multilayers of $\mathrm{Ta}|{\mathrm{Co}}_{20}{\mathrm{F}}_{60}{\mathrm{B}}_{20}|\mathrm{MgO}$. The effective DMI is measured experimentally using domain wall motion measurements, both in the presence (using spin-orbit torques) and absence of driving currents (using magnetic fields). We observe that the current-induced domain wall motion yields a change in effective DMI magnitude and opposite domain wall chirality when compared to field-induced domain wall motion (without current). We explore this effect, which we refer to as current-induced DMI, by providing possible explanations for its emergence, and explore the possibility of its manifestation in the framework of recent theoretical predictions of DMI modifications due to spin currents.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-06-06 |