Electrically-driven domain wall motion in a ferromagnetic Kagome lattice

Abstract

We theoretically study domain wall motion induced by an electric field in the quantum anomalous Hall states on a two-dimensional Kagome lattice with ferromagnetic order and spin-orbit coupling. We show that an electric charge is accumulated near the domain wall which indicates that the electric field drives both the accumulated charge and the domain wall with small energy dissipation. Using the linear response theory we compute the non-equilibrium spin density which exerts a non-adiabatic spin transfer torque on textures of the local magnetization. This torque emerges even when the bulk is insulating and does not require the longitudinal electric current. Finally, we estimate the velocity of domain wall motion in this system, which is faster than that in conventional metals.

arXiv comment8 pages, 5 figures

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Cited by in corpus (7)

• Colloquium: Quantum anomalous Hall effect
• Electric manipulation of domain walls in magnetic Weyl semimetals via the axial anomaly
• Magnetic orderings from spin-orbit coupled electrons on kagome lattice
• Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect
• Nodal lines and boundary modes in topological Dirac semimetals with magnetism
• Effective Tight-Binding Model of Compensated Ferrimagnetic Weyl Semimetal with Spontaneous Orbital Magnetization
• Probing domain wall dynamics in magnetic Weyl semimetals via the non-linear anomalous Hall effect