Van der Waals Multiferroic Tunnel Junctions

Abstract

Multiferroic tunnel junctions (MFTJs) have aroused significant interest due to their functional properties useful for non-volatile memory devices. So far, however, all the existing MFTJs have been based on perovskite-oxide heterostructures limited by a relatively high resistance-area (RA) product unfavorable for practical applications. Here, using first-principles calculations, we explore spin-dependent transport properties of van der Waals (vdW) MFTJs which consist of two-dimensional (2D) ferromagnetic FenGeTe2 (n = 3, 4, 5) electrodes and 2D ferroelectric In2Se3 barrier layers. We demonstrate that such FemGeTe2/In2Se3/FenGeTe2 (m, n = 3, 4, 5) MFTJs exhibit multiple non-volatile resistance states associated with different polarization orientation of the ferroelectric In2Se3 layer and magnetization alignment of the two ferromagnetic FenGeTe2 layers. We find a remarkably low RA product which makes the proposed vdW MFTJs superior to the conventional MFTJs in terms of their promise for non-volatile memory applications.

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Cited by in corpus (13)

• Electrical control of magnetism by electric field and current-induced torques
• Microscopic origin of multiferroic order in monolayer NiI${}_2$
• Tremendous tunneling magnetoresistance effects based on van der Waals room-temperature ferromagnet Fe${}_3$GaTe${}_2$ with highly spin-polarized Fermi surfaces
• Voltage-tunable giant nonvolatile multiple-state resistance in sliding-interlayer ferroelectric h-BN van der Waals multiferroic tunnel junction
• Moiré-driven multiferroic order in twisted CrCl${}_3$, CrBr${}_3$ and CrI${}_3$ bilayers
• Giant electrode effect on tunneling magnetoresistance and electroresistance in van der Waals intrinsic multiferroic tunnel junctions using VS2
• Above room temperature multiferroic tunnel junction with the altermagnetic metal CrSb
• Giant Nonvolatile Multistate Resistance with Fully Magnetically Controlled van der Waals Multiferroic Tunnel Junctions
• Momentum-Resolved Tunneling Modulation Induced Giant Multistate Resistance in Antiferroelectric Multiferroic Junction
• Enhanced magnetoelectric coupling in two-dimensional hybrid multiferroic heterostructures
• Magnetic order-dependent giant tunneling magnetoresistance and electroresistance in van der Waals antiferromagnetic-multiferroic tunnel junctions
• Magnetoelectricity in two-dimensional materials
• Symmetry-controlled SrRuO3/SrTiO3/SrRuO3 magnetic tunnel junctions:Spin polarization and its relevance to tunneling magnetoresistance