Atomic-Layer-Controlled Magnetic Orders in MnBi2Te4-Bi2Te3 Topological Heterostructures
arXiv:2407.15029 · doi:10.1021/acs.nanolett.4c02320
Abstract
The natural van der Waals superlattice MnBi2Te4-(Bi2Te3)m provides an optimal platform to combine topology and magnetism in one system with minimal structural disorder. Here, we show that this system can harbor both ferromagnetic (FM) and antiferromagnetic (AFM) orders and that these magnetic orders can be controlled in two different ways by either varying the Mn-Mn distance while keeping the Bi2Te3/MnBi2Te4 ratio constant or vice versa. We achieve this by creating atomically engineered sandwich structures composed of Bi2Te3 and MnBi2Te4 layers. We show that the AFM order is exclusively determined by the Mn-Mn distance whereas the FM order depends only on the overall Bi2Te3/MnBi2Te4 ratio regardless of the distance between the MnBi2Te4 layers. Our results shed light on the origins of the AFM and FM orders and provide insights into how to manipulate magnetic orders not only for the MnBi2Te4-Bi2Te3 system but also for other magneto-topological materials.
25 pages, 5 figures, accepted to Nano Letters
References in corpus (39)
- Topological Insulators
- Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
- Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBiTe
- Intrinsic magnetic topological insulators in van der Waals layered MnBiTe-family materials
- Topological axion states in magnetic insulator MnBiTe with the quantized magnetoelectric effect
- Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator
- Experimental realization of an intrinsic magnetic topological insulator
- 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
- Colloquium: Quantum anomalous Hall effect
- Impurity effect on weak anti-localization in the topological insulator Bi2Te3
- Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
- Large magnetic gap at the Dirac point in a Mn-induced BiTe heterostructure
- A van der Waals antiferromagnetic topological insulator with weak interlayer magnetic coupling
- Natural van der Waals heterostructural single crystals with both magnetic and topological properties
- Realization of an intrinsic, ferromagnetic topological state in MnBi8Te13
- Above 400 K Robust Perpendicular Ferromagnetic Phase in a Topological Insulator
- Independent tuning of electronic properties and induced ferromagnetism in topological insulators with heterostructure approach
- Mn-rich MnSb2Te4: A topological insulator with magnetic gap closing at high Curie temperatures of 45-50 K
- Site Mixing for Engineering Magnetic Topological Insulators
- Robust A-type order and spin-flop transition on the surface of the antiferromagnetic topological insulator MnBiTe
- Magnetic topological insulator MnBi6Te10 with zero-field ferromagnetic state and gapped Dirac surface states
- Distinct Topological Surface States on the Two Terminations of MnBiTe
- Record-High Proximity-Induced Anomalous Hall Effect in (BiSb)2Te Thin Film Grown on CrGeTe Substrate
- Ferromagnetic-antiferromagnetic coexisting ground states and exchange bias effects in and
- Tuning the magnetism and band topology through antisite defects in Sb doped MnBi4Te7
- Tailoring Hybrid Anomalous Hall Response in Engineered Magnetic Topological Insulator Heterostructures
- Direct evidence of ferromagnetism in MnSb2Te4
- Adsorption-controlled growth of MnTe(Bi2Te3)n by molecular beam epitaxy exhibiting stoichiometry-controlled magnetism
- Hybrid symmetry epitaxy of superconducting Fe(Te,Se) film on a topological insulator
- Role of Magnetic Defects and Defect-engineering of Magnetic Topological Insulators
- Structurally and Chemically Compatible BiInSe3 Substrate for Topological Insulator Thin Films
- High temperature, gate-free quantum anomalous Hall effect with an active capping layer
- Suppressing carrier density in (BixSb1-x)2Te3 films using Cr2O3 interfacial layers
- Imaging the breakdown and restoration of topological protection in magnetic topological insulator MnBiTe
- Superconducting four-fold Fe(Te,Se) film on six-fold magnetic MnTe via hybrid symmetry epitaxy
- Spacer-layer-tunable magnetism and high-field topological Hall effect in topological insulator heterostructures
- Evolution of Dopant-Concentration-Induced Magnetic Exchange Interaction in Topological Insulator Thin Films
- From classical to quantum regime of topological surface states via defect engineering