Thin-Film Magnetization Dynamics on the Surface of a Topological Insulator

Abstract

We theoretically study the magnetization dynamics of a thin ferromagnetic film exchange-coupled with a surface of a strong three-dimensional topological insulator. We focus on the role of electronic zero modes imprinted by domain walls (DW's) or other topological textures in the magnetic film. Thermodynamically reciprocal hydrodynamic equations of motion are derived for the DW responding to electronic spin torques, on the one hand, and fictitious electromotive forces in the electronic chiral mode fomented by the DW, on the other. An experimental realization illustrating this physics is proposed based on a ferromagnetic strip, which cuts the topological insulator surface into two gapless regions. In the presence of a ferromagnetic DW, a chiral mode transverse to the magnetic strip acts as a dissipative interconnect, which is itself a dynamic object that controls (and, inversely, responds to) the magnetization dynamics.

7 pages, 2 figures

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• Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• Three dimensional topological invariants for time reversal invariant Hamiltonians and the three dimensional quantum spin Hall effect
• Dynamics of domain walls in magnetic nanostrips
• Theory of spin magnetohydrodynamics

Cited by in corpus (77)

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• Growth and Characterization of Hybrid Insulating Ferromagnet-Topological Insulator Heterostructure Devices
• Time-Reversal-Symmetry-Breaking Superconductivity in Epitaxial Bismuth/Nickel Bilayers
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• Spin-helical transport in normal and superconducting topological insulators
• Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets
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• Spin-Torque Generation in Topological-Insulator-Based Heterostructures
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• Spin and spin current -- From fundamentals to recent progress
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• Spintronics and spincaloritronics in topological insulators
• Universal charge and current on magnetic domain walls in Weyl semimetals
• Domain wall of a ferromagnet on a three-dimensional topological insulator
• Amperean Pairing at the Surface of Topological Insulators
• Spin and Orbital Magnetic Response on the Surface of a Topological Insulator
• Charged skyrmions on the surface of a topological insulator
• Improved Domain Wall Dynamics and Magnonic Torques using Topological Insulators
• Sensitivity of anomalous Hall effect to disorder correlations
• Spin Orbit Torque in two dimensional Antiferromagnetic Topological Insulators
• Spin diffusion and magnetoresistance in ferromagnet/topological-insulator junctions
• Reflectionless Transport of Surface Dirac Fermions on Topological Insulators with Induced Ferromagnetic Domain Walls
• Domain Wall Motion in Thin-Film Magnets/ Topological Insulator Junctions
• Magnon-induced superconductivity in a topological insulator coupled to ferro- and antiferromagnetic insulators
• Quantum Hall Edge States in Topological Insulator Nanoribbons
• Local optical control of ferromagnetism and chemical potential in a topological insulator
• Dirac electrons and domain walls: a realization in junctions of ferromagnets and topological insulators
• Rules for dissipationless topotronics
• Dynamics of domain-wall Dirac fermions on a topological insulator: a chiral fermion beam splitter
• Domain Wall in a Quantum Anomalous Hall Insulator as a Magnetoelectric Piston
• Skyrmion-induced anomalous Hall conductivity on topological insulator surfaces
• Modeling Near-Surface Bound Electron States in Three-Dimensional Topological Insulator: Analytical and Numerical Approaches
• Temperature and Chemical Potential Dependence of the Parity Anomaly in Quantum Anomalous Hall Insulators
• Axial anomaly generation by domain wall motion in Weyl semimetals
• Electric manipulation of domain walls in magnetic Weyl semimetals via the axial anomaly
• Electric coupling in scanning SQUID measurements
• Observation of chiral currents at the magnetic domain boundary of a topological insulator
• Effective Quantum Theories for Transport in Inhomogeneous Systems with Non-trivial Band Structure
• Topological spin-plasma waves
• Highly Tunable Spin-Orbit Torque and Anisotropic Magnetoresistance in a Topological Insulator Thin Film Attached to Ferromagnetic Layer
• Topological electric driving of magnetization dynamics in insulators
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• Spin-charge transport driven by magnetization dynamics on disordered surface of doped topological insulators
• Semi-metal-insulator transition on the surface of a topological insulator with in-plane magnetization
• Magnetic dynamics with Weyl fermions
• Edelstein and inverse Edelstein effects caused by the pristine surface states of topological insulators
• Electrical response of S-F-TI-S junctions on magnetic texture dynamics
• Electrically-driven domain wall motion in a ferromagnetic Kagome lattice
• Long-time relaxation dynamics of a spin coupled to a Chern insulator
• Magnetoconductance signatures of chiral domain-wall bound states in magnetic topological insulators
• Intrinsic torques emerging from anomalous velocity in magnetic textures
• Non-local topological magnetoelectric effect by Coulomb interaction at a topological insulator-ferromagnet interface
• Current-induced switching of magnetic molecules on topological insulator surfaces
• Spin dynamics of $3d$ and $4d$ impurities embedded in prototypical topological insulators
• Finite temperature fluctuation-induced order and responses in magnetic topological insulators
• Chiral Hall effect in the kink states in topological insulators with magnetic domain walls
• Quantum walk on a graph of spins: magnetism and entanglement
• Thermal screening at finite chemical potential on a topological surface and its interplay with proximity-induced ferromagnetism
• Domain-wall free energy in Heisenberg ferromagnets
• Geometric Dynamics of Magnetization: Electronic Contribution
• Induced Spin-texture at 3$d$ Transition Metal/Topological Insulator Interfaces
• Topological magnetic dipolar interaction and non-local electric magnetization control in topological insulator heterostructures
• Vortex bound states of charge and magnetic fluctuations-induced topological superconductors in heterostructures
• Spin-torque resonance due to diffusive dynamics at a surface of topological insulator
• Nonlinear chiral photocurrent in parity-violating magnetic Weyl semimetals
• Planar magnetic texture on the surface of a topological insulator
• Topological staggered field-electric effect with bipartite magnets
• Electromagnon on the Surface of Magnetic Topological Insulator
• Tracing Dirac points of topological surface states by ferromagnetic resonance
• Charged magnons on the surface of a topological insulator
• Probing domain wall dynamics in magnetic Weyl semimetals via the non-linear anomalous Hall effect
• Chiral electronic network within skyrmionic lattice on topological insulator surfaces