Antiferromagnetic Topological Insulator MnBi2Te4: Synthesis and Magnetic properties

Abstract

Recently, MnBi2Te4 has been discovered as the first intrinsic antiferromagnetic topological insulator (AFM TI), and will become a promising material to discover exotic topological quantum phenomena. In this work, we have realized the successful synthesis of high-quality MnBi2Te4 single crystals by solid-state reactions. The as-grown MnBi2Te4 single crystal exhibits a van der Waals layered structure, which is composed of septuple Te-Bi-Te-Mn-Te-Bi-Te sequences as determined by powder X-ray diffraction (PXRD) and high-resolution high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM). The magnetic order below 25 K as a consequence of A-type antiferromagnetic interaction between Mn layers in the MnBi2Te4 crystal suggests the unique interplay between antiferromagnetism and topological quantum states. The transport measurements of MnBi2Te4 single crystals further confirm its magnetic transition. Moreover, the unstable surface of MnBi2Te4, which is found to be easily oxidized in air, deserves attention for onging research on few-layer samples. This study on the first AFM TI of MnBi2Te4 will guide the future research on other potential candidates in the MBixTey family (M = Ni, V, Ti, etc.).

16 pages, 10 figures

References in corpus (21)

• Topological Insulators
• Topological insulators and superconductors
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• 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
• Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
• Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
• 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
• Magnetoelectric polarizability and axion electrodynamics in crystalline insulators
• Topological axion states in magnetic insulator MnBi${}_2$Te${}_4$ with the quantized magnetoelectric effect
• Unique thickness-dependent properties of the van der Waals interlayer antiferromagnet $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$ films
• Giant Magneto-optical Kerr Effect and Universal Faraday Effect in Thin-film Topological Insulators
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Realization of the Axion Insulator State in Quantum Anomalous Hall Sandwich Heterostructures
• Crystal growth and magnetic structure of MnBi2Te4
• Chemical Aspects of the Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$
• Dirac Fermions in Antiferromagnetic Semimetal
• Tailoring tricolor structure of magnetic topological insulator for robust axion insulator
• Quantum Spin Hall and Quantum Anomalous Hall States Realized in Junction Quantum Wells

Cited by in corpus (43)

• Colloquium: Quantum anomalous Hall effect
• High-Chern-Number and High-Temperature Quantum Hall Effect without Landau Levels
• A van der Waals antiferromagnetic topological insulator with weak interlayer magnetic coupling
• Realization of an intrinsic, ferromagnetic topological state in MnBi8Te13
• Odd-even layer-number effect and layer-dependent magnetic phase diagrams in MnBi2Te4
• Site Mixing for Engineering Magnetic Topological Insulators
• Electronic states and magnetic response of MnBi2Te4 by scanning tunneling microscopy and spectroscopy
• Defect-driven ferrimagnetism and hidden magnetization in MnBi${}_2$Te${}_4$
• In-plane antiferromagnetic moments in axion topological insulator candidate EuIn${}_2$As${}_2$
• Electric field induced topological phase transition and large enhancements of spin-orbit coupling and Curie temperature in two-dimensional ferromagnetic semiconductors
• Distinguishing two-component anomalous Hall effect from topological Hall effect
• Hybridization-Induced Gapped and Gapless States on the Surfaces of Magnetic Topological Insulators
• Antiferromagnetic Quantum Anomalous Hall Effect Modulated by Spin Flips and Flops
• Ultrafast coherent interlayer phonon dynamics in atomically thin layers of MnBi2Te4
• Local manifestations of thickness dependent topology and axion edge state in topological magnet MnBi${}_2$Te${}_4$
• Crystal structure and Raman active lattice vibrations of magnetic topological insulators MnBi2Te4 n(Bi2Te3) (n = 0, 1, . . . , 6)
• Magnetization-tuned topological quantum phase transition in MnBi2Te4 devices
• Detection of magnetic gap in the topological surface states of MnBi2Te4
• Real-time observation of magnetization and magnon dynamics in a two-dimensional topological antiferromagnet MnBi2Te4
• Infrared study of the multiband low-energy excitations of the topological antiferromagnet MnBi${}_2$Te${}_4$
• Evolution of the electronic structure of ultrathin MnBi2Te4 Films
• Dynamical properties of magnetic topological insulator $T$Bi${}_2$Te${}_4$ ($T=$Mn, Fe): phonons dispersion, Raman active modes, and chiral phonons study
• Anomalous Second Harmonic Generation from Atomically Thin MnBi2Te4
• Antiferromagnetic order in MnBi2Te4 films grown on Si(111) by molecular beam epitaxy
• Effect on the Electronic and Magnetic Properties of Antiferromagnetic Topological Insulator MnBi${}_2$Te${}_4$ with Sn Doping
• Detailed structural and topological analysis of SnBi2Te4 single crystal
• Pressure-driven electronic and structural phase transition in intrinsic magnetic topological insulator MnSb2Te4
• Formation of a stable surface oxide in MnBi${}_2$Te${}_4$ thin films
• Three-Dirac-fermion approach to unexpected universal gapless surface states of van der Waals magnetic topological insulators
• Influence of magnetic ordering on the optical response of the antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Stacking-dependent Electronic and Topological Properties in van der Waals Antiferromagnet MnBi${}_2$Te${}_4$ Films
• Second harmonic generation induced by gate voltage oscillation in few layer MnBi2Te4
• Bulk photovoltaic effect in antiferromagnet: Role of collective spin dynamics
• Infrared study of the layered, magnetic insulator Mn(Bi${}_{0.07}$Sb${}_{0.93}$)${}_2$Te${}_4$ at low temperatures
• Interfacing Quantum Spin Hall and Quantum Anomalous Hall insulators: Bi bilayer on MnBi${}_2$Te${}_4$-family materials
• Gate-tunable magnetoresistance in six-septuple-layer MnBi${}_2$Te${}_4$
• Optical study of the charge dynamics evolution in the topological insulators MnBi${}_2$Te${}_4$ and Mn(Bi${}_{0.74}$Sb${}_{0.26}$)${}_2$Te${}_4$ under high pressure
• Ferroelectric switching of quantum anomalous Hall effects in MnBi2Te4 films
• Evolution of the optical response of the magnetic topological insulators Mn(Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_4$ with Sb content
• Magnetic Interactions and Cluster Formation: Boosting Surface Thermopower in Topological Insulators
• Vapor transport growth of MnBi2Te4 and related compounds
• Self-organization mechanism in Bridgman-grown MnBi2Te4/(Bi2Te3)n: influence on layer sequence and magnetic properties
• Light-driven topological and magnetic phase transitions in thin-layer antiferromagnets