Magneto-optical Kerr effect in ferroelectric antiferromagnetic two-dimensional heterostructures

Abstract

We study the magneto-optical Kerr effect (MOKE) of the two-dimensional heterostructure CrI3/In2Se3/CrI3 by using density functional theory calculations and symmetry analysis. The spontaneous polarization in the In2Se3 ferroelectric layer and the antiferromagnetic ordering in CrI3 layers break the mirror symmetry and the timereversal symmetry, thus activating MOKE. We show that the Kerr angle can be switched by either the polarization or the antiferromagnetic order parameter. Our results suggest that ferroelectric and antiferromagnetic 2D heterostructures could be exploited for ultra-compact information storage devices, where the information is encoded by the two ferroelectric or the two time-reversed antiferromagnetic states, and the read-out performed optically by MOKE.

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• Spin-Polarized Antiferromagnetic Spintronics
• Emergent Multiferroic Altermagnets and Spin Control via Noncollinear Molecular Polarization
• Two-dimensional 5d multiferroic W3Cl8: breathing Kagome lattice and tunable magneto-optical Kerr effect
• Layer Control of Magneto-Optical Effects and Their Quantization in Spin-Valley Splitting Antiferromagnets
• Ubiquitous van der Waals altermagnetism with sliding/moire ferroelectricity
• Ferroelectric Antiferromagnetic Lifting of Spin-Valley Degeneracy
• Magnetic and ferroelectric phase diagram of twisted CrI${}_3$ layers
• Theoretical study of Magnetoresistance Oscillations in Semi-parabolic Plus Semi-inverse Squared Quantum Wells in the Presence of Intense Electromagnetic Waves
• Ultrafast Magneto-optical Fingerprints of Altermagnetism in MnTe
• Tunable Magneto-optical Kerr effect in two-dimensional non-collinear antiferromagnetic material HfFeCl6
• All-electrical switching of spin texture in a strain-tunable 2D Janus ferroelectric altermagnet