Damping-like Torque in Monolayer 1T-TaS${}_2$

Abstract

A damping-like spin orbit torque (SOT) is a prerequisite for ultralow power spin logic devices. Here, we report on the damping-like SOT in just one monolayer of the conducting transition metal dichalcogenide (TMD) TaS${}_2$ interfaced with a NiFe (Py) ferromagnetic layer. The charge-spin conversion efficiency is found to be 0.25$\pm$0.03 and the spin Hall conductivity (2.63 $\times$ 10${}^5$ $\frac{\hslash }{2e}$ ${\Omega }^{-1}$ m${}^{-1}$) is found to be superior to values reported for other TMDs. The origin of this large damping-like SOT can be found in the interfacial properties of the TaS${}_2$/Py heterostructure, and the experimental findings are complemented by the results from density functional theory calculations. The dominance of damping-like torque demonstrated in our study provides a promising path for designing next generation conducting TMD based low-powered quantum memory devices.

arXiv comment11pages,6figures

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Cited by in corpus (10)

• Twisted Magnetic Van der Waals Bilayers: An Ideal Platform for Altermagnetism
• Two-dimensional charge density wave TaX${}_2$ (X=S, Se, Te) from first principles
• Spin-Orbit Torques in Transition Metal Dichalcogenide/Ferromagnet Heterostructures
• Large anomalous unidirectional magnetoresistance in a single ferromagnetic layer
• Separation of Artifacts from Spin-Torque Ferromagnetic Resonance Measurements of Spin-Orbit Torque for the Low-Symmetry van der Waals Semi-Metal ZrTe${}_{\text{3}}$
• Unraveling the Spin-to-Charge Current Conversion Mechanism and Charge Transfer Dynamics at Interface of Graphene/WS${}_2$ Heterostructures at Room Temperature
• Altermagnetism, ARPES, symmetry, non-relativistic band splitting
• Symmetry-driven Intrinsic Nonlinear Pure Spin Hall Effect
• Dynamic detection of current-induced spin-orbit magnetic fields: a phase independent approach
• Current-induced spin-orbit torque on the surface of a transition metal dichalcogenide connected to a two-dimensional ferromagnet CrI${}_3$: Effects of twisting and gating