High-mobility inertial domain walls driven by spin-transfer torque in a ferrimagnetic spinel oxide

Abstract

Efficient electrical manipulation of domain walls is key to developing magnetic devices with fast switching capabilities and low energy consumption. Here we demonstrate Bloch-type domain wall velocities exceeding 1 km s${}^{-1}$ in the single-layer ferrimagnetic spinel oxide NiCo${}_2$O${}_4$ induced by spin-transfer torque at a current density of $2\times 10^{11}$ A m${}^{-2}$. This exceptional domain wall mobility is attributed to the combination of giant nonadiabatic spin-transfer torque, low magnetization, and high spin polarization. Additionally, we report a pronounced domain wall inertia effect in this ferrimagnet due to the large nonadiabaticity of the torque. The characteristic time for domain wall acceleration and deceleration is $\sim 1$ ns, shorter than that reported for typical ferromagnets. Our findings highlight the potential of spinel oxides as a promising platform for engineering high-performance domain wall devices that take advantage of ultrafast ferrimagnetic dynamics.

27 pages, 5 figures

References in corpus (36)

• Current-driven dynamics of chiral ferromagnetic domain walls
• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Roles of non-equilibrium conduction electrons on magnetization dynamics of ferromagnets
• Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
• Micromagnetic understanding of current-driven domain wall motion in patterned nanowires
• Real-space observation of current-driven domain wall motion in submicron magnetic wires
• Theory of Current-Driven Domain Wall Motion: A Poorman's Approach
• Fast domain wall motion induced by antiferromagnetic spin dynamics at the angular momentum compensation temperature of ferrimagnets
• Microscopic approach to current-driven domain wall dynamics
• Oxide spintronics
• Switching a spin-valve back and forth by current-induced domain wall motion
• Domain wall propagation in magnetic nanowires by spin polarized current injection
• Single-shot dynamics of spin-orbit torque and spin transfer torque switching in three-terminal magnetic tunnel junctions
• Staggering antiferromagnetic domain wall velocity in a staggered spin-orbit field
• Antiferromagnetic domain wall motion driven by spin-orbit torques
• Current-induced domain wall motion in compensated ferrimagnet
• Velocity of domain-wall motion induced by electrical current in a ferromagnetic semiconductor (Ga,Mn)As
• The nature of domain walls in ultrathin ferromagnets revealed by scanning nanomagnetometry
• High-speed domain wall racetracks in a magnetic insulator
• Spin Transfer Torque for Continuously Variable Magnetization
• Magnetic domain wall based synaptic and activation function generator for neuromorphic accelerators
• Magnon-Driven Domain-Wall Motion with the Dzyaloshinskii-Moriya Interaction
• Threshold Current of Domain Wall Motion under Extrinsic Pinning, $\beta$-Term and Non-Adiabaticity
• Spin-transfer torques for domain walls in antiferromagnetically coupled ferrimagnets
• Current-driven domain wall dynamics in ferrimagnetic Ni-doped Mn4N films : very large domain wall velocities and reversal of motion direction across the magnetic compensation point
• Magnetic domain walls displacement : automotion vs. spin-transfer torque
• Co-existence of Bloch and Neel walls in a collinear antiferromagnet
• Size-dependence of nanosecond-scale spin-torque switching in perpendicularly magnetized tunnel junctions
• Perspective on Epitaxial NiCo2O4 Film as an Emergent Spintronic Material: Magnetism and Transport Properties
• Tunable inertia of chiral magnetic domain walls
• Unveiling domain wall dynamics of ferrimagnets in thermal magnon currents: competition of angular momentum transfer and entropic torque
• Accurate calculation of the transverse anisotropy in perpendicularly magnetized multilayers
• Unidirectional Magnon-Driven Domain Wall Motion Due to the Interfacial Dzyaloshinskii-Moriya Interaction
• Optically-induced magnetization switching in NiCo2O4 thin films using ultrafast lasers
• Microscopic Calculation of Spin Torques in Textured Antiferromagnets
• All-optical helicity-dependent switching in NiCo${}_2$O${}_4$ thin films