Janus Monolayers of Magnetic Transition Metal Dichalcogenides as an All-in-One Platform for Spin-Orbit Torque

Abstract

We theoretically predict that vanadium-based Janus dichalcogenide monolayers constitute an ideal platform for spin-orbit-torque memories. Using first principles calculations, we demonstrate that magnetic exchange and magnetic anisotropy energies are higher for heavier chalcogen atoms, while the broken inversion symmetry in the Janus form leads to the emergence of Rashba-like spin-orbit coupling. The spin-orbit torque efficiency is evaluated using optimized quantum transport methodology and found to be comparable to heavy nonmagnetic metals. The coexistence of magnetism and spin-orbit coupling in such materials with tunable Fermi-level opens new possibilities for monitoring magnetization dynamics in the perspective of non-volatile magnetic random access memories.

arXiv comment5 pages, 4 figures

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Cited by in corpus (6)

• Spin-orbit torque for field-free switching in C_{3v} crystals
• Promoting $p$-based Hall effects by $p$-$d$-$f$ hybridization in Gd-based dichalcogenides
• Correlation-driven topological transition in Janus VSiGeP2As2
• Spin-orbit correlations and exchange-bias control in twisted Janus dichalcogenide multilayers
• Intrinsic characteristic radius drives phonon anomalies in Janus transition metal dichalcogenide nanotubes
• Orbital torques and orbital pumping in two-dimensional rare-earth dichalcogenides