Magneto-optical Kerr Effect in Ferroelectric Antiferromagnetic Two-Dimensional Heterostructures

We studied the magneto-optical Kerr effect (MOKE) of two-dimensional (2D) heterostructure CrI3/In2Se3/CrI3 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 mi...

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Veröffentlicht in:ACS applied materials & interfaces 2023-05, Vol.15 (18), p.22282-22290
Hauptverfasser: Ding, Ning, Yananose, Kunihiro, Rizza, Carlo, Fan, Feng-Ren, Dong, Shuai, Stroppa, Alessandro
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container_issue 18
container_start_page 22282
container_title ACS applied materials & interfaces
container_volume 15
creator Ding, Ning
Yananose, Kunihiro
Rizza, Carlo
Fan, Feng-Ren
Dong, Shuai
Stroppa, Alessandro
description We studied the magneto-optical Kerr effect (MOKE) of two-dimensional (2D) heterostructure CrI3/In2Se3/CrI3 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 and the time-reversal symmetry, thus activating MOKE. We show that the Kerr angle can be reversed by either the polarization or the antiferromagnetic order parameter. Our results suggest that ferroelectric and antiferromagnetic 2D heterostructures could be exploited for ultracompact information storage devices, where the information is encoded by the two ferroelectric or the two time-reversed antiferromagnetic states and the read-out is performed optically by MOKE.
doi_str_mv 10.1021/acsami.3c02680
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title Magneto-optical Kerr Effect in Ferroelectric Antiferromagnetic Two-Dimensional Heterostructures
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