Electric and magnetic fields tuned spin-polarized topological phases in two-dimensional ferromagnetic MnBi${}_4$Te${}_7$

Abstract

Applying electric or magnetic fields is widely used to not only create and manipulate topological states but also facilitate their observations in experiments. In this work, we show by first-principles calculations and topological analysis that the time-reversal (TR) symmetry-broken quantum spin Hall (QSH) state emerges in a two-dimensional ferromagnetic MnBi${}_4$Te${}_7$ monolayer. This TR-symmetry broken QSH phase possesses a highly tunable nontrivial band gap under an external electric field (or tuning interlayer distance). Furthermore, based on the Wannier-function-based tight-binding approach, we reveal that a topological phase transition from the TR-symmetry broken QSH phase to the quantum anomalous Hall (QAH) phase occurs with the increase of magnetic fields. Besides, we also find that a reverse electric fields can facilitate the realization of QAH phase. Our work not only uncovers the ferromagnetic topological properties the MnBi${}_4$Te${}_7$ monolayer tuned by electric and magnetic fields, but also can stimulate further applications to spintronics and topological devices.

arXiv comment7 pages, 4 figures

References in corpus (57)

• Topological Insulators
• Topological insulators and superconductors
• Quantum Spin Hall Effect in Graphene
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Maximally-localized generalized Wannier functions for composite energy bands
• Unpaired Majorana fermions in quantum wires
• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Wannier90: A Tool for Obtaining Maximally-Localised Wannier Functions
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• WannierTools: An open-source software package for novel topological materials
• Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe${}_3$GeTe${}_2$
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBi${}_2$Te${}_4$
• Prediction and observation of the first antiferromagnetic topological insulator
• Controlling magnetism in 2D CrI3 by electrostatic doping
• Intrinsic magnetic topological insulators in van der Waals layered MnBi${}_2$Te${}_4$-family materials
• An equivalent expression of Z2 Topological Invariant for band insulators using Non-Abelian Berry's connection
• Topological axion states in magnetic insulator MnBi${}_2$Te${}_4$ with the quantized magnetoelectric effect
• Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator
• Unique thickness-dependent properties of the van der Waals interlayer antiferromagnet $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$ films
• Observation of Majorana fermions with spin selective Andreev reflection in the vortex of topological superconductor
• Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics
• High-Chern-Number and High-Temperature Quantum Hall Effect without Landau Levels
• Theory of the anomalous Hall effect from the Kubo formula and the Dirac equation
• Time-reversal-symmetry-broken quantum spin Hall effect
• Dirac surface states in intrinsic magnetic topological insulators EuSn2As2 and MnBi2nTe3n+1
• Natural van der Waals heterostructural single crystals with both magnetic and topological properties
• Highly-ordered wide bandgap materials for quantized anomalous Hall and magnetoelectric effects
• Variety of magnetic topological phases in the (MnBi${}_2$Te${}_4$)(Bi${}_2$Te${}_3$)${}_m$ family
• Calculation of intrinsic spin Hall conductivity by Wannier interpolation
• When chiral photons meet chiral fermions - Photoinduced anomalous Hall effects in Weyl semimetals
• Realization of an intrinsic, ferromagnetic topological state in MnBi8Te13
• Magnetic proximity effect at the 3D topological insulator/magnetic insulator interface
• Quantum anomalous Hall effect with tunable Chern number in magnetic topological insulator film
• Observation of high-temperature quantum anomalous Hall regime in intrinsic MnBi${}_2$Te${}_4$/Bi${}_2$Te${}_3$ superlattice
• Rational design principles of quantum anomalous Hall effect from superlattice-like magnetic topological insulators
• Magnetically Controllable Topological Quantum Phase Transitions in Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Mn-rich MnSb2Te4: A topological insulator with magnetic gap closing at high Curie temperatures of 45-50 K
• Topological electronic structure and intrinsic magnetization in MnBi${}_4$Te${}_7$: a Bi${}_2$Te${}_3$-derivative with a periodic Mn sublattice
• A-type Antiferromagnetic order in MnBi4Te7 and MnBi6Te10 single crystals
• High-Temperature Quantum Anomalous Hall Insulators in Lithium-Decorated Iron-Based Superconductor Materials
• Magnetic and transport properties in magnetic topological insulators MnBi2Te4(Bi2Te3)n (n=1,2)
• Magnetic-field-induced robust zero Hall plateau state in MnBi${}_2$Te${}_4$ Chern insulator
• A mechanism of $\frac{e^2}{2h}$ conductance plateau without 1D chiral Majorana fermions
• Intrinsic magnetic topological insulators
• Electric field induced topological phase transition and large enhancements of spin-orbit coupling and Curie temperature in two-dimensional ferromagnetic semiconductors
• Magnetized Topological Insulator Multilayers
• Berry Curvature Engineering by Gating Two-Dimensional Antiferromagnets
• Axion Insulator State with ferromagnetic ordering in CrI3/Bi2Se3/MnBi2Se4 Heterostructure
• Large Band Gap Quantum Anomalous Hall Phase in Hexagonal Organometallic Frameworks
• Gate-Tunable Quantum Anomalous Hall Effects in MnBi${}_2$Te${}_4$ Thin Films
• Zeeman-splitting-induced Topological Nodal Structure and Anomalous Hall Conductivity in ZrTe${}_5$
• Magnetic Field Induced Weyl Semimetal from Wannier-Function-based Tight-Binding Model
• Fate of Quantum Anomalous Hall Effect in the Presence of External Magnetic Fields and Particle-Hole Asymmetry

Cited by in corpus (1)

• Reconstructing the wavefunction of magnetic topological insulators MnBi2Te4 and MnBi4Te7 using spin-resolved photoemission