Proximity-Induced Tunable Magnetic Order at the Interface of All-van der Waals-Layered Heterostructures

Abstract

Copyright © 2023 American Chemical Society. Spin-orbit coupling (SOC) plays a crucial rolein controllingthe spin-charge conversion efficiency, spin torque, and complexmagnetic spin structures. In this study, we investigate the interplaybetween SOC and ferromagnetism in heterostructures of large-SOC andmagnetic materials. We highlight the importance of the SOC-proximityeffect on magnetic ordering in all-van der Waals-layered heterostructures,specifically Fe3GeTe2(FGT)/monolayer W1-x V x Se2 (x = 0 and 0.05). By increasing the SOC strength, we demonstratevarious magnetic orderings induced at the interface of the heterostructure,including spin-flop, spin-flip, and inverted magnetization. Moreover,we show a sharp magnetic switching from antiferromagnetic state toferromagnetic state in FGT/W0.95V0.05Se2, which is characteristic of the synthetic antiferromagneticstructure. This proof-of-concept result offers the possibility ofinterface-tailoring spintronics, including two-dimensional magnetoresistiverandom access memory toggle switching. Our findings provide insightinto the design and development of next-generation spintronic devicesby exploiting the interplay between SOC and magnetic ordering in all-vander Waals-layered heterostructures.