Large anomalous Hall effect in ferromagnetic insulator-topological insulator heterostructures

Abstract

We demonstrate the van der Waals epitaxy of the topological insulator compound Bi2Te3 on the ferromagnetic insulator Cr2Ge2Te6. The layers are oriented with (001) of Bi2Te3 parallel to (001) of Cr2Ge2Te6 and (110) of Bi2Te3 parallel to (100) of Cr2Ge2Te6. Cross-sectional transmission electron microscopy indicates the formation of a sharp interface. At low temperatures, bilayers consisting of Bi2Te3 on Cr2Ge2Te6 exhibit a large anomalous Hall effect (AHE). Tilted field studies of the AHE indicate that the easy axis lies along the c-axis of the heterostructure, consistent with magnetization measurements in bulk Cr2Ge2Te6. The 61 K Curie temperature of Cr2Ge2Te6 and the use of near-stoichiometric materials may lead to the development of spintronic devices based on the AHE.

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Cited by in corpus (42)

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• Progress and prospects in magnetic topological materials
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• Quantized topological magnetoelectric effect of the zero-plateau quantum anomalous Hall state
• Transport in two-dimensional topological materials: recent developments in experiment and theory
• Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene
• Magnetic anisotropy of the single-crystalline ferromagnetic insulator Cr2Ge2Te6
• Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
• ZrTe2/CrTe2: an epitaxial van der Waals platform for spintronics
• Carrier and strain tunable intrinsic magnetism in two-dimensional MAX${}_3$ transition metal chalcogenides
• Spin Seebeck effect in the layered ferromagnetic insulators CrSiTe${}_3$ and CrGeTe${}_3$
• Record-High Proximity-Induced Anomalous Hall Effect in (Bi${}_x$Sb${}_{1-x}$)2Te${}_3$ Thin Film Grown on CrGeTe${}_3$ Substrate
• Apparent Ferromagnetism in Exfoliated Ultra-thin Pyrite Sheets
• Electrically tunable exchange splitting in bilayer graphene on monolayer Cr${}_2$X${}_2$Te${}_6$ with X=Ge, Si, and Sn
• First-principles studies of spin-phonon coupling in Cr2Ge2Te6 monolayer
• Quantum Anomalous Hall Effect in Magnetic Doped Topological Insulators and Ferromagnetic Spin-Gapless Semiconductors -- A Perspective Review
• Magnetic Anisotropy and Low Field Magnetic Phase Diagram of Quasi Two-Dimensional Ferromagnet Cr${}_2$Ge${}_2$Te${}_6$
• A spin dynamics study in layered van der Waals single crystal, Cr${}_2$Ge${}_2$Te${}_6$
• Pursuing High-Temperature Quantum Anomalous Hall Effect in MnBi${}_2$Te${}_4$/Sb${}_2$Te${}_3$ Heterostructures
• Observation of Interfacial Antiferromagnetic Coupling between Magnetic Topological Insulator and Antiferromagnetic Insulator
• Engineering the breaking of time-reversal symmetry in gate-tunable hybrid ferromagnet/topological insulator heterostructures
• Interior and edge magnetization in thin exfoliated CrGeTe3 films
• Polaronic Conductivity in Cr${}_2$Ge${}_2$Te${}_6$ Single Crystals
• Gate-tunable anomalous Hall effect in a 3D topological insulator/2D magnet van der Waals heterostructure
• Enhanced Ferromagnetism in Monolayer Cr2Te3 via Topological Insulator Coupling
• Emergence of inductance and capacitance from topological electromagnetism
• Two-Stage Proximity-Induced Gap-Opening in Topological Insulator - Insulating Ferromagnet (Bi${}_x$Sb${}_{1-x}$)${}_2$Te${}_3$ - EuS Bilayers
• Efficient Soft-Chemical Synthesis of Large van-der-Waals Crystals of the Room-Temperature Ferromagnet 1T-CrTe2
• Multi hole bands and quasi 2-dimensionality in Cr2Ge2Te6 studied by angle-resolved photoemission spectroscopy
• Magnetic Proximity Effect in an Antiferromagnetic Insulator/Topological Insulator Heterostructure with Sharp Interface
• Universally optimizable strategy for magnetic gaps towards high-temperature quantum anomalous Hall states via magnetic-insulator/topological-insulator building-blocks
• Gate-tunable Intrinsic Anomalous Hall Effect in Epitaxial MnBi2Te4 Films
• From classical to quantum regime of topological surface states via defect engineering
• Discovery of a high-temperature antiferromagnetic state and transport signatures of exchange interactions in a Bi2Se3/EuSe heterostructure
• Quantum Anomalous Hall Effect in Three-dimensional Topological Insulator/Thin-film Ferromagnetic Metal Bilayer Structure
• Bi${}_2$Se${}_3$ thin films heteroepitaxially grown on $\alpha$-RuCl${}_3$
• Unraveling the dynamics of magnetization in topological insulator-ferromagnet heterostructures via spin-orbit torque
• Unconventional enhancement of anomalous Hall effect by tilt of Zeeman field in topologically-nontrivial MXenes, $M_2{M}^{\prime }$C${}_2$O${}_2$
• Enhancement of Curie Temperature in Ferromagnetic Insulator-Topological Insulator Heterostructures
• Spin Wave Generation via Localized Spin-Orbit Torque in an Antiferromagnet-Topological Insulator Heterostructure
• Gate-tunable anomalous Hall effect in stacked van der Waals ferromagnetic insulator - topological insulator heterostructures