Metal-to-Insulator Switching in Quantum Anomalous Hall States

Abstract

After decades of searching for the dissipationless transport in the absence of any external magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic topological insulator (TI) films. However, the universal phase diagram of QAHE and its relation with quantum Hall effect (QHE) remain to be investigated. Here, we report the experimental observation of the giant longitudinal resistance peak and zero Hall conductance plateau at the coercive field in the 6 quintuple-layer (Cr0.12Bi0.26Sb0.62)2Te3 film, and demonstrate the metal-to-insulator switching between two opposite QAHE plateau states up to 0.3 K. Moreover, the universal QAHE phase diagram is realized through the angle-dependent measurements. Our results address that the quantum phase transitions in both QAHE and QHE regimes are in the same universality class, yet the microscopic details are different. In addition, the realization of the QAHE insulating state unveils new ways to explore quantum phase-related physics and applications.

References in corpus (17)

• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
• Quantum Hall Ferromagnetism in Graphene
• Landau Level Splitting in Graphene in High Magnetic Fields
• Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells
• Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• Surface quantized anomalous Hall current and magneto-electric effect in magnetically disordered topological insulators
• Precise quantization of anomalous Hall effect near zero magnetic field
• The zero-energy state in graphene in a high magnetic field
• Density of states and zero Landau level probed through capacitance of graphene
• Collective Modes and Skyrmion Excitations in Graphene SU(4) Quantum Hall Ferromagnets
• Visualization of superparamagnetic dynamics in magnetic topological insulators
• Giant Anisotropic Magnetoresistance in a Quantum Anomalous Hall Insulator
• Observation of the zero Hall plateau in a quantum anomalous Hall insulator

Cited by in corpus (89)

• Intrinsic quantized anomalous Hall effect in a moiré heterostructure
• Colloquium: Quantum anomalous Hall effect
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Realization of the Axion Insulator State in Quantum Anomalous Hall Sandwich Heterostructures
• Magnetic modulation doping in topological insulators toward higher-temperature quantum anomalous Hall effect
• Highly-ordered wide bandgap materials for quantized anomalous Hall and magnetoelectric effects
• Tailoring Exchange Couplings in Magnetic Topological Insulator/Antiferromagnet Heterostructures
• Above 400 K Robust Perpendicular Ferromagnetic Phase in a Topological Insulator
• Visualization of superparamagnetic dynamics in magnetic topological insulators
• Two-dimensional Weyl Half Semimetal and Tunable Quantum Anomalous Hall Effect in Monolayer PtCl${}_3$
• Observation of high-temperature quantum anomalous Hall regime in intrinsic MnBi${}_2$Te${}_4$/Bi${}_2$Te${}_3$ superlattice
• Quantized chiral edge conduction on reconfigurable domain walls of a magnetic topological insulator
• Non-Majorana Origin of the Half-Quantized Conductance Plateau in Quantum Anomalous Hall Insulator and Superconductor Hybrid Structures
• Quantum Anomalous Hall Effect in Time-Reversal-Symmetry Breaking Topological Insulators
• Robust A-type order and spin-flop transition on the surface of the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Magnetic imaging of antiferromagnetic domain walls
• Scaling of the Quantum Anomalous Hall Effect as an Indicator of Axion Electrodynamics
• Quantum transport of two-species Dirac fermions in dual-gated three-dimensional topological insulators
• Direct evidence of ferromagnetism in a quantum anomalous Hall system
• Large discrete jumps observed in the transition between Chern states in a ferromagnetic Topological Insulator
• Observation of the quantum-anomalous-Hall insulator to Anderson insulator quantum phase transition and its scaling behavior
• Spectral signatures of the surface anomalous Hall effect in magnetic axion insulators
• Quantized anomalous Hall resistivity achieved in molecular beam epitaxy-grown MnBi2Te4 thin films
• Chiral transport along magnetic domain walls in the quantum anomalous Hall effect
• Any Axion Insulator Must be a Bulk Three-Dimensional Topological Insulator
• Routes to realize the axion-insulator phase in MnBi${}_2$Te${}_4$(Bi${}_2$Te${}_3$)${}_n$ family: a perspective
• Zero-field Edge Magnetoplasmons in a Magnetic Topological Insulator
• Quantum phase transition of chiral Majorana fermion in the presence of disorder
• Effects of Domain Walls in Quantum Anomalous Hall Insulator/Superconductor Heterostructures
• Effects of random domains on the zero Hall plateau in quantum anomalous Hall effect
• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Critical Behavior and Universal Signature of an Axion Insulator State
• Progress and prospects in the quantum anomalous Hall effect
• Epitaxy and Structural Properties of (V,Bi,Sb)${}_2$Te${}_3$ Layers Exhibiting the Quantum Anomalous Hall Effect
• Topological quantum phase transition in magnetic topological insulator upon magnetization rotation
• Electrically tunable topological superconductivity and Majorana fermions in two dimensions
• Observation of superparamagnetism in coexistence with quantum anomalous Hall C=$\pm$1 and C=0 Chern states
• Electrically tunable spin polarization of chiral edge modes in a quantum anomalous Hall insulator
• Functional renormalization group for a large moiré unit cell
• Cryogenic in-memory computing using magnetic topological insulators
• A Non-Volatile Cryogenic Random-Access Memory Based on the Quantum Anomalous Hall Effect
• Magnetization-tuned topological quantum phase transition in MnBi2Te4 devices
• Gate-Tunable Quantum Anomalous Hall Effects in MnBi${}_2$Te${}_4$ Thin Films
• Magnetic-field-induced topological phase transition in Fe-doped (Bi,Sb)${}_2$Se${}_3$ heterostructures
• Multiple Chiral Majorana Fermion Modes and Quantum Transport
• Quantum-Hall to Insulator Transition in Ultra-low-carrier-density Topological Insulator Films and a Hidden Phase of the Zeroth Landau Level
• Axion Insulator State in Hundred-Nanometer-Thick Magnetic Topological Insulator Sandwich Heterostructures
• Phase transition and anomalous scaling in the quantum Hall transport of topological insulator Sn-Bi1.1Sb0.9Te2S devices
• Observation of magnetism induced topological edge state in antiferromagnetic topological insulator MnBi4Te7
• Realization of Stable Ferromagnetic Order in Topological Insulator: Codoping Enhanced Magnetism in 4f Transition Metal Doped Bi2Se3
• Giant Hall Switching by Surface-State-Mediated Spin-Orbit Torque in a Hard Ferromagnetic Topological Insulator
• Influences of the dissipative topological edge state on quantized transport in MnBi2Te4
• Realization of Quantum Anomalous Hall Effect in Graphene from \textit{n}-\textit{p} Codoping Induced Stable Atomic-Adsorption
• Magnetic proximity effect of a topological insulator and a ferromagnet in thin film bilayers of $BiSbT{e}_3$ and $SrRu{O}_3$
• Conductance fluctuations and disorder induced $\nu =0$ quantum Hall plateau in topological insulator nanowires
• Current scaling of the topological quantum phase transition between a quantum anomalous Hall insulator and a trivial insulator
• Dynamical Quantum Anomalous Hall Effect in Strong Optical Fields
• Antiferromagnetic Chern insulator in centrosymmetric systems
• Phase transitions in intrinsic magnetic topological insulator with high-frequency pumping
• Topological Magnetoelectric Response in Ferromagnetic Axion Insulators
• Topological Phase Transitions Induced by Disorder in Magnetically Doped (Bi, Sb)${}_2$Te${}_3$ Thin Films
• Two-Stage Proximity-Induced Gap-Opening in Topological Insulator - Insulating Ferromagnet (Bi${}_x$Sb${}_{1-x}$)${}_2$Te${}_3$ - EuS Bilayers
• Proximity-induced quasi-one-dimensional superconducting quantum anomalous Hall state: a promising scalable top-down approach towards localized Majorana modes
• Smearing of the quantum anomalous Hall effect due to statistical fluctuations of magnetic dopants
• Resonant magneto-optic Kerr effect in the magnetic topological insulator Cr:(Sb${}_x$,Bi${}_{1-x}$)${}_2$Te${}_3$
• Robust magnetotransport in disordered ferromagnetic kagome layers with quantum anomalous Hall effect
• Electrical control of intrinsic nonlinear Hall effect in antiferromagnetic topological insulator sandwiches
• Antiferromagnetic Chern insulator with large charge gap in heavy transition-metal compounds
• Three-Dimensional Quantum Anomalous Hall Effect in Magnetic Topological Insulator Trilayers of Hundred-Nanometer Thickness
• Direct probe of ferromagnetic proximity effect at the interface in Fe/SnTe heterostructure by polarized neutron reflectometry
• Chern insulator in a ferromagnetic two-dimensional electron system with Dresselhaus spin-orbit coupling
• From classical to quantum regime of topological surface states via defect engineering
• Engineering Plateau Phase Transition in Quantum Anomalous Hall Multilayers
• Enhancement of temperature of quantum anomalous Hall effect in two-dimensional germanene/magnetic semiconductor heterostructures
• Environmental Doping-Induced Degradation of the Quantum Anomalous Hall Insulators
• Phonon and defect mediated quantum anomalous Hall insulator to metal transition in magnetically doped topological insulators
• Shubnikov-de Haas oscillations in the anomalous Hall conductivity of Chern insulators
• Parity Anomalous Semimetal with Minimal Conductivity Induced by an In-Plane Magnetic Field
• Direct visualization of edge state in even-layer MnBi2Te4 at zero magnetic field
• Antiferromagnetic topological insulators in heavy-fermion systems
• Dynamical simulation of the injection of vortices into a Majorana edge mode
• Spin-orbit torque switching of Néel order in band-inverted antiferromagnetic bilayer MnBi${}_2$Te${}_4$
• Robust quantum anomalous Hall effect with spatially uncorrelated disorder
• Correlated disorder induced anomalous transport in magnetically doped topological insulators
• Interlayer Exchange Coupling-Induced Critical-Metal-to-Insulator Phase Transition in Quantum Anomalous Hall Insulators
• Effect of extended confinement on the structure of edge channels in the quantum anomalous Hall effect
• Symmetry-protected topological wire in a topological vacuum
• To See a World in a Grain of Sand -- The Scientific Life of Shoucheng Zhang
• High Chern number phase in topological insulator multilayer structures: a Dirac cone model study