Intriguing Magnetoelectric Effect in Two-dimensional Ferromagnetic/Perovskite Oxide Ferroelectric Heterostructure

Abstract

Two-dimensional (2D) magnets have broad application prospects in the spintronics, but how to effectively control them with a small electric field is still an issue. Here we propose that 2D magnets can be efficiently controlled in a multiferroic heterostructure composed of 2D magnetic material and perovskite oxide ferroelectric (POF) whose dielectric polarization is easily flipped under a small electric field. We illustrate the feasibility of such strategy in the bilayer CrI3/BiFeO3(001) heterostructure by using the first-principles calculations. Different from the traditional POF multiferroic heterostructures which have strong interface interactions, we find that the interface interaction between CrI3 and BiFeO3(001) is van der Waals type. Whereas, the heterostructure has particular strong magnetoelectric coupling where the bilayer CrI3 can be efficiently switched between ferromagnetic and antiferromagnetic types by the polarized states of BiFeO3(001). We also discover the competing effect between electron doping and the additional electric field on the interlayer exchange coupling interaction of CrI3, which is responsible to the magnetic phase transition. Our results provide a new avenue for the tuning of 2D magnets with a small electric field.

arXiv comment7 pages, 5 figures

References in corpus (19)

• Quantum Spin Hall Effect in Graphene
• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Van der Waals Density Functional for General Geometries
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Van der Waals density functionals applied to solids
• Gate-tunable Room-temperature Ferromagnetism in Two-dimensional Fe${}_3$GeTe${}_2$
• Quantum Spin Hall Effect in Silicene
• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Large-gap quantum spin Hall insulators in tin films
• Out-of-plane Piezoelectricity and Ferroelectricity in Layered $\alpha$-In2Se3 Nano-flakes
• Towards ferroelectrically-controlled magnetism: Magnetoelectric effect in Fe/BaTiO3 multilayers
• Stacking-Dependent Magnetism in Bilayer CrI${}_3$
• Artificial Multiferroics and Enhanced Magnetoelectric Effect in van der Waals Heterostructures
• RESCU: a Real Space Electronic Structure Method
• New Family of Quantum Spin Hall Insulators in Two-dimensional Transition-Metal Halide with Large Nontrivial Band Gaps
• Topological Dirac states beyond $\pi$ orbitals for silicene on SiC(0001) surface
• High-Curie-temperature ferromagnetism in bilayer CrI3 on bulk semiconducting substrates
• New approach for fabrication germanene with Dirac electrons preserved: A first principle study
• Two-dimensional transition metal oxides Mn2O3 realized quantum anomalous Hall effect

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• Creating a three dimensional intrinsic electric dipole on rotated CrI${}_3$ bilayers
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• Nanopore-patterned CuSe drives the realization of PbSe-CuSe lateral heterostructure
• Sliding Ferroelectricity Induced and Switched Altermagnetism in GaSe-VPSe3-GaSe Sandwiched Heterostructure with Strong Magnetoelectric Effect