Automotion of Domain Walls for Spintronic Interconnects
arXiv:1311.3385 · doi:10.1063/1.4881061
Abstract
We simulate automotion, the spontaneous transport of a magnetic domain wall under the influence of demagnetization and magnetic anisotropy, in nanoscale spintronic interconnects. In contrast to spin transfer driven magnetic domain wall motion, the proposed interconnects operate with only a transient current pulse and provide favorable scaling down to the 20nm scale. Cases of both in-plane and perpendicular magnetization are considered. Analytical dependence of the velocity of domain walls on the angle of magnetization are compared with full micromagnetic simulations. Deceleration, disappearance, and reflection of domain walls are demonstrated. Dependences of the magnetization angle on the current pulse parameters are studied. The energy and delay analysis suggests that automotion is an attractive option for spintronic logic interconnects.
9 figures, 25 pages
References in corpus (5)
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- Domain wall damped harmonic oscillations induced by curvature gradients in elliptical magnetic nanowires
- Fabrication of magnetic tunnel junctions connected through a continuous free layer to enable spin logic devices
- Control of magnetic response in curved stripes by tailoring cross-section
- Skyrmion automotion in confined counter-sensor device geometries
- Dynamics of asymmetrically deformed skyrmion driven by internal forces and strain force in a flower-shaped magnetic nanostructure
- Efficient domain wall motion in asymmetric magnetic tunnel junctions with vertical current flow