Electrically Tunable Magnetism in Magnetic Topological Insulators

Abstract

The external controllability of the magnetic properties in topological insulators would be important both for fundamental and practical interests. Here we predict the electric-field control of ferromagnetism in a thin film of insulating magnetic topological insulators. The decrease of band inversion by the application of electric fields results in a reduction of magnetic susceptibility, and hence in the modification of magnetism. Remarkably, the electric field could even induce the magnetic quantum phase transition from ferromagnetism to paramagnetism. We further propose a topological transistor device in which the dissipationless charge transport of chiral edge states is controlled by an electric field. In particular, the field-controlled ferromagnetism in magnetic topological insulator can be used for voltage based writing of magnetic random access memories in magnetic tunnel junctions. The simultaneous electrical control of magnetic order and chiral edge transport in such devices may lead to electronic and spintronic applications for topological insulators.

4.9 pages, 5 figures, 1 table. Accepted to Phys. Rev. Lett

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• Dynamical Axion Field in a Magnetic Topological Insulator Superlattice
• Electrically tunable magnetism and unique intralayer charge transfer in Janus monolayer MnSSe for spintronics applications
• Effect of Rashba splitting on RKKY interaction in topological insulator thin films
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Electrically tunable topological superconductivity and Majorana fermions in two dimensions
• Magnetic quantum phase transition in Cr-doped Bi2(SexTe1-x)3 driven by the Stark effect
• Noncollinear twisted RKKY interaction on the optically driven SnTe(001) surface
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• Impurity scattering on the surface of topological insulator thin films
• Slow quenches in two-dimensional time-reversal symmetric Z2 topological insulators
• Engineering of topological phases in driven thin topological insulator: Structure inversion asymmetry effect
• Dielectric and electronic properties of three-dimensional Luttinger semimetals with a quadratic band touching
• Voltage-driven Magnetization Switching via Dirac Magnetic Anisotropy and Spin--orbit Torque in Topological-insulator-based Magnetic Heterostructures
• Magnetic topological transistor exploiting layer-selective transport
• Topological Phase Transitions Induced by Disorder in Magnetically Doped (Bi, Sb)${}_2$Te${}_3$ Thin Films
• Resonant magneto-optic Kerr effect in the magnetic topological insulator Cr:(Sb${}_x$,Bi${}_{1-x}$)${}_2$Te${}_3$
• Effect of surface hybridization on RKKY coupling in ferromagnet/topological insulator/ferromagnet trilayer system
• Vector Chirality $\kappa$ Driven Topological Phase Transition and the Associated Anomalous Hall Conductivity Tuning in a Non-Collinear Antiferromagnet
• Tuning topology in thin films of topological insulators by strain gradients
• Effect of the external fields in high Chern number quantum anomalous Hall insulators
• Remote control of spin polarization of topological corner states
• Controllable Majorana fermions on domain walls of a magnetic topological insulator
• From classical to quantum regime of topological surface states via defect engineering
• Effect of chiral selective tunneling on quantum transport in magnetic topological-insulator thin films
• Model studies of topological phase transitions in materials with two types of magnetic atoms
• Chiral edge state coupling theory of transport in quantum anomalous Hall insulators
• Anomalous in-gap edge states in two-dimensional pseudospin-1 Dirac insulators
• Tunability of Room Temperature Ferromagnetism in Spintronic Semiconductors through Non-magnetic Atoms
• Collective excitations in magnetic topological insulators and axion dark matter search
• Antiferromagnetism and spin density waves in 3D Dirac semimetals
• Numerical analysis of voltage-controlled magnetization switching operation in magnetic-topological-insulator-based devices
• Topology-insensitive axion mass in magnetic topological insulators
• Optimizing proximitized magnetic topological insulator nanoribbons for Majorana bound states
• Highly tunable magnetic coupling in ultrathin topological insulator films due to impurity resonances
• Tuning topological surface magnetism by bulk alloying
• Thermoelectric refrigerator based on asymmetric surfaces of a magnetic topological insulator
• Variety of scenarios of the magnetic exchange response in topological insulators
• Conductance oscillations of antiferromagnetic layer tunnel junctions
• Enhancement of Curie Temperature in Ferromagnetic Insulator-Topological Insulator Heterostructures
• Correlated disorder induced anomalous transport in magnetically doped topological insulators
• Electrostatic gating and the interference of chiral Majoranas in thin slabs of magnetic topological insulators
• Spatial aspects of spin polarization of structurally split surface states in thin films with magnetic exchange and spin-orbit interaction