Intrinsic non-adiabatic topological torque in magnetic skyrmions and vortices

Abstract

We propose that topological spin currents flowing in topologically non-trivial magnetic textures, such as magnetic skyrmions and vortices, produce an intrinsic non-adiabatic torque of the form ${\mathbf{T}}_t\sim [({\partial }_x\mathbf{m}\times {\partial }_y\mathbf{m})\cdot \mathbf{m}]{\partial }_y\mathbf{m}$. We show that this torque, which is absent in one-dimensional domain walls and/or non-topological textures, is responsible for the enhanced non-adiabaticity parameter observed in magnetic vortices compared to one-dimensional textures. The impact of this torque on the motion of magnetic skyrmions is expected to be crucial, especially to determine their robustness against defects and pinning centers.

arXiv comment7 pages, 4 figures

References in corpus (36)

• Current-driven dynamics of chiral ferromagnetic domain walls
• Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
• Topological Hall effect in the A-phase of MnSi
• Blowing Magnetic Skyrmion Bubbles
• Roles of non-equilibrium conduction electrons on magnetization dynamics of ferromagnets
• Spin Transfer Torques in MnSi at Ultra-low Current Densities
• Kwant: a software package for quantum transport
• Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
• Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
• Hall Effect of Light
• Micromagnetic understanding of current-driven domain wall motion in patterned nanowires
• Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
• Emergent electrodynamics of skyrmions in a chiral magnet
• Theory of Current-Driven Domain Wall Motion: A Poorman's Approach
• Current-induced skyrmion dynamics in constricted geometries
• Theory of current-driven motion of Skyrmions and spirals in helical magnets
• Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
• Topological Hall effect and Berry phase in magnetic nanostructures
• Dynamics of Skyrmion Crystals in Metallic Thin Films
• Rotating skyrmion lattices by spin torques and field or temperature gradients
• High domain wall velocities induced by current in ultrathin Pt/Co/AlOx wires with perpendicular magnetic anisotropy
• Spin Transfer Torque for Continuously Variable Magnetization
• Electron Transport Driven by Nonequilibrium Magnetic Textures
• Spin pumping by a field-driven domain wall
• Non-adiabatic spin torque investigated using thermally activated magnetic domain wall dynamics
• Spin orbit precession damping in transition metal ferromagnets
• Current-driven vortex domain wall dynamics by micromagnetic simulations
• Spin Pumping of Current in Non-Uniform Conducting Magnets
• Spin torque and force due to current for general spin textures
• Topological Hall and Spin Hall Effects in Disordered Skyrmionic Textures
• Manipulation of skyrmions in nanodisks with a current pulse and skyrmion rectifier
• Surface Roughness Dominated Pinning Mechanism of Magnetic Vortices in Soft Ferromagnetic Films
• Phenomenology of chiral damping in noncentrosymmetric magnets
• Enhanced Non-Adiabaticity in Vortex Cores due to the Emergent Hall Effect
• Influence of material defects on current-driven vortex domain wall mobility
• Static and dynamic properties of vortices in anisotropic magnetic disks

Cited by in corpus (10)

• Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion
• Spin and charge pumping by steady or pulse current-driven magnetic domain wall: A self-consistent multiscale time-dependent-quantum/time-dependent-classical approach
• Current-driven skyrmion Depinning in Magnetic Granular Films
• Twisted skyrmion at domain boundaries and the method of image
• Tuning skyrmion Hall effect via engineering of spin-orbit interaction
• Effective damping enhancement in noncollinear spin structures
• Role of an additional interfacial spin-transfer torque for current-driven skyrmion dynamics in chiral magnetic layers
• Cooperative Charge Pumping and Enhanced Skyrmion Mobility
• Topological Hall effect for electron scattering on skyrmions in external magnetic field
• Topological Aspects of Antiferromagnets