Topological Phase Transitions Induced by Disorder in Magnetically Doped (Bi, Sb)${}_2$Te${}_3$ Thin Films

Abstract

We study disorder induced topological phase transitions in magnetically doped (Bi, Sb)${}_2$Te${}_3$ thin films, by using large scale transport simulations of the conductance through a disordered region coupled to reservoirs in the quantum spin Hall regime. Besides the disorder strength, the rich phase diagram also strongly depends on the magnetic exchange field, the Fermi level, and the initial topological state in the undoped and clean limit of the films. In an initially trivial system at non-zero exchange field, varying the disorder strength can induce a sequence of transitions from a normal insulating, to a quantum anomalous Hall, then a spin-Chern insulating, and finally an Anderson insulating state. While for a system with topology initially, a similar sequence, but only starting from the quantum anomalous Hall state, can be induced. Varying the Fermi level we find a similarly rich phase diagram, including transitions from the quantum anomalous Hall to the spin-Chern insulating state via a state that behaves as a mixture of a quantum anomalous Hall and a metallic state, akin to recent experimental reports.

References in corpus (50)

• Weyl and Dirac Semimetals in Three Dimensional Solids
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
• Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBi${}_2$Te${}_4$
• Intrinsic quantized anomalous Hall effect in a moiré heterostructure
• Prediction and observation of the first antiferromagnetic topological insulator
• Intrinsic magnetic topological insulators in van der Waals layered MnBi${}_2$Te${}_4$-family materials
• High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
• Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
• Antiferromagnetic topological insulators
• Quantum Spin Hall Effect and Topologically Invariant Chern Numbers
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• Topological Anderson Insulator
• Magnetic impurities on the surface of a topological insulator
• A topological insulator surface under strong Coulomb, magnetic and disorder perturbations
• Oscillatory crossover from two dimensional to three dimensional topological insulators
• Theory of the topological Anderson insulator
• Surface quantized anomalous Hall current and magneto-electric effect in magnetically disordered topological insulators
• Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect
• Precise quantization of anomalous Hall effect near zero magnetic field
• Competition between weak localization and antilocalization in topological surface states
• Dirac Fermions in Antiferromagnetic Semimetal
• Numerical study of the topological Anderson insulator in HgTe/CdTe quantum wells
• Carrier-independent ferromagnetism and giant anomalous Hall effect in magnetic topological insulator
• Imaging Dirac-Mass Disorder from Magnetic Dopant-Atoms in the Ferromagnetic Topological Insulator Cr${}_x$(Bi${}_{0.1}$Sb${}_{0.9}$)${}_{2-x}$Te${}_3$
• Electrically controllable surface magnetism on the surface of topological insulator
• Metal-to-Insulator Switching in Quantum Anomalous Hall States
• Visualization of superparamagnetic dynamics in magnetic topological insulators
• Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator
• Universal Scaling of Quantum Anomalous Hall Plateau Transition
• Observation of the zero Hall plateau in a quantum anomalous Hall insulator
• Chemical potential dependent gap-opening at the Dirac surface states of Bi2Se3 induced by aggregated substitutional Cr atoms
• Electronic states and magnetic response of MnBi2Te4 by scanning tunneling microscopy and spectroscopy
• The dependence of topological Anderson insulator on the type of disorder
• Observation of Anderson localization in ultrathin films of three-dimensional topological insulators
• Direct evidence of ferromagnetism in a quantum anomalous Hall system
• Electrically Tunable Magnetism in Magnetic Topological Insulators
• Observation of the quantum-anomalous-Hall insulator to Anderson insulator quantum phase transition and its scaling behavior
• Anderson Localization from Berry-Curvature Interchange in Quantum Anomalous Hall System
• Criticality of the metal-topological insulator transition driven by disorder
• Effects of random domains on the zero Hall plateau in quantum anomalous Hall effect
• Scaling Behavior of the Quantum Phase Transition from a Quantum Anomalous Hall Insulator to an Axion Insulator
• Disorder-induced topological phase transitions on Lieb lattices
• Magnetic quantum phase transition in Cr-doped Bi2(SexTe1-x)3 driven by the Stark effect
• Topological Anderson Insulators in Systems without Time-Reversal Symmetry
• Quantum Anomalous Parity Hall Effect in Magnetically Disordered Topological Insulator Films
• Sign change in the anomalous Hall effect and strong transport effects in a 2D massive Dirac metal due to spin-charge correlated disorder
• Magnetism-induced massive Dirac spectra and topological defects in the surface state of Cr-doped Bi${}_2$Se${}_3$-bilayer topological insulators
• Influence of magnetic disorders on Quantum Anomalous Hall Effect in Magnetic Topological Insulator Films beyond the two-dimensional limit

Cited by in corpus (6)

• Quantum interference and imaging using intense laser fields
• Robust measurement of wave function topology on NISQ quantum computers
• Enhancement of temperature of quantum anomalous Hall effect in two-dimensional germanene/magnetic semiconductor heterostructures
• Born approximation study of the strong disorder in magnetized surface states of topological insulator
• Recent progress on disorder-induced topological phases
• Correlated disorder induced anomalous transport in magnetically doped topological insulators