Chiral Domain Wall Injector Driven by Spin-orbit Torques
arXiv:2003.11805 · doi:10.1021/acs.nanolett.9b01504
Abstract
Memory and logic devices that encode information in magnetic domains rely on the controlled injection of domain walls to reach their full potential. In this work, we exploit the chiral coupling induced by the Dzyaloshinskii-Moriya interaction between in-plane and out-of-plane magnetized regions of a Pt/Co/AlO\textsubscript{x} trilayer in combination with current-driven spin-orbit torques to control the injection of domain walls into magnetic conduits. We demonstrate that the current-induced domain nucleation is strongly inhibited for magnetic configurations stabilized by the chiral coupling and promoted for those that have the opposite chirality. These configurations allow for efficient domain wall injection using current densities of the order of \SI{e11}{A m^{-2}}, which are lower than those used in other injection schemes. Furthermore, by setting the orientation of the in-plane magnetization using an external field, we demonstrate the use of a chiral domain wall injector to create a controlled sequence of alternating domains in a racetrack structure driven by a steady stream of unipolar current pulses.
References in corpus (21)
- Magnetic switching by spin torque from the spin Hall effect
- Current-driven dynamics of chiral ferromagnetic domain walls
- Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
- Symmetry and magnitude of spin-orbit torques in ferromagnetic heterostructures
- Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
- Skyrmion confinement in ultrathin film nanostructures in the presence of Dzyaloshinskii-Moriya interaction
- Layer thickness dependence of the current induced effective field vector in Ta|CoFeB|MgO
- Domain wall motion governed by the spin Hall effect
- Ultrafast magnetization switching by spin-orbit torques
- Interfacial Dzyaloshinskii-Moriya interaction in perpendicularly-magnetized Pt/Co/AlO ultrathin films measured by Brillouin light spectroscopy
- Time- and spatially-resolved magnetization dynamics driven by spin-orbit torques
- The skyrmion switch: turning magnetic skyrmion bubbles on and off with an electric field
- Domain wall tilting in the presence of the Dzyaloshinskii-Moriya interaction in out-of-plane magnetized magnetic nanotracks
- Analysis of anisotropy crossover due to oxygen in Pt/Co/MOx trilayer
- Chirality-induced asymmetric magnetic nucleation in Pt/Co/AlOx ultrathin microstructures
- Nanosecond-timescale low error switching of in-plane magnetic tunnel junctions through dynamic Oersted-field assisted spin-Hall effect
- Experimental evidences of a large extrinsic spin Hall effect in AuW alloy
- Spin-orbit torque driven chiral magnetization reversal in ultrathin nanostructures
- Efficient and controlled domain wall nucleation for magnetic shift registers
- Asymmetric velocity and tilt angle of domain walls induced by spin-orbit torques
- Chiral magnetoresistance in Pt/Co/Pt zigzag wires
Cited by in corpus (16)
- Spin-orbit torque switching of magnetic tunnel junctions for memory application
- Chirality as Generalized Spin-Orbit Interaction in Spintronics
- Spintronics on Chiral Objects
- Synthetic chiral magnets promoted by the Dzyaloshinskii-Moriya interaction
- Growth-dependent Interlayer Chiral Exchange and Field-free Switching
- Field- and current-driven magnetic domain-wall inverter and diode
- Synchronization of chiral vortex nano-oscillators
- Strong lateral exchange coupling and current-induced switching in single-layer ferrimagnetic films with patterned compensation temperature
- Quantum magnetometry of transient signals with a time resolution of 1.1 nanoseconds
- Quantum anomalous Hall effects controlled by chiral domain walls
- Engineering of Intrinsic Chiral Torques in Magnetic Thin Films Based on the Dzyaloshinskii-Moriya Interaction
- Asymmetric depinning of chiral domain walls in ferromagnetic trilayers
- Magnetization reversal of dipolar coupled nanomagnets studied by two-dimensional electron gas based micro-Hall magnetometry
- Control of spin-orbit torque-driven domain nucleation through geometry in chirally coupled magnetic tracks
- Facilitating domain wall injection in magnetic nanowires by electrical means
- Geometrical design for pure current-driven domain wall nucleation and shifting