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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers
(Submitted on 13 Jan 2023 (v1), last revised 10 Oct 2023 (this version, v2))
Abstract: The advent of twist-engineering in two-dimensional (2D) crystals enables the design of van der Waals (vdW) heterostructures exhibiting emergent properties. In the case of magnets, this approach can afford artificial antiferromagnets with tailored spin arrangements. Here, we fabricate an orthogonally-twisted bilayer by twisting 90 degrees two CrSBr ferromagnetic monolayers with an easy-axis in-plane anisotropy. The magneto-transport properties reveal multistep magnetization switching with a magnetic hysteresis opening, that is absent in the pristine case. By tuning the magnetic field, we modulate the remanent state and coercivity and select between hysteretic and non-hysteretic magneto-resistance scenarios. This complexity pinpoints spin anisotropy as a key aspect in twisted magnetic superlattices. Our results highlight the control over the magnetic properties in vdW heterostructures, leading to a variety of field-induced phenomena and opening a fruitful playground for creating desired magnetic symmetries and manipulating non-collinear magnetic configurations.
Submission history
From: Samuel Mañas-Valero [view email][v1] Fri, 13 Jan 2023 16:39:14 GMT (3120kb)
[v2] Tue, 10 Oct 2023 13:24:15 GMT (5455kb)
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