Nano scale thermo-electrical detection of magnetic domain wall propagation
arXiv:1611.07785 · doi:10.1103/PhysRevB.95.220410
Abstract
In magnetic nanowires with perpendicular magnetic anisotropy (PMA) magnetic domain walls (DW) are narrow and can move rapidly driven by current induced torques. This enables important applications like high-density memories for which the precise detection of the position and motion of a propagating DW is of utmost interest. Today's DW detection tools are often limited in resolution, or acquisition speed, or can only be applied on specific materials. Here, we show that the anomalous Nernst effect provides a simple and powerful tool to precisely track the position and motion of a single DW propagating in a PMA nanowire. We detect field and current driven DW propagation in both metallic heterostructures and dilute magnetic semiconductors over a broad temperature range. The demonstrated spatial resolution below 20 nm is comparable to the DW width in typical metallic PMA systems.
arXiv comment26 pages including supplementary information
References in corpus (12)
- Anomalous Hall effect
- Current-driven dynamics of chiral ferromagnetic domain walls
- Spin Caloritronics
- Real-space observation of current-driven domain wall motion in submicron magnetic wires
- Creep and flow regimes of magnetic domain wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy
- Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect
- All-magnonic spin-transfer torque and domain wall propagation
- Soliton-like magnetic domain wall motion induced by the interfacial Dzyaloshinskii-Moriya interaction
- Subatomic movements of a domain wall in the Peierls potential
- Influence of heat flow directions on Nernst effects in Py/Pt bilayers
- Thermoelectric spin transfer in textured magnets
- Domain wall magneto-Seebeck effect
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- Giant localised spin-Peltier effect due to ultrafast domainwalls motion in antiferromagnetic metals
- Near-field magneto-caloritronic nanoscopy on ferromagnetic nanostructures
- Graphene with Rashba spin-orbit interaction and coupling to a magnetic layer: Electron states localized at the domain wall