Magnetic Proximity induced efficient charge-to-spin conversion in large area PtSe${}_2$/Ni${}_{80}$Fe${}_{20}$ heterostructures

Abstract

As a topological Dirac semimetal with controllable spin-orbit coupling and conductivity, PtSe${}_2$, a transition-metal dichalcogenide, is a promising material for several applications from optoelectric to sensors. However, its potential for spintronics applications is yet to be explored. In this work, we demonstrate that PtSe${}_2$/Ni${}_{80}$Fe${}_{20}$ heterostructure can generate a large damping-like current-induced spin-orbit torques (SOT), despite the absence of spin-splitting in bulk PtSe${}_2$. The efficiency of charge-to-spin conversion is found to be $(-0.1\pm 0.02)$~nm${}^{-1}$ in PtSe${}_2$/Ni${}_{80}$Fe${}_{20}$, which is three times that of the control sample, Ni${}_{80}$Fe${}_{20}$/Pt. Our band structure calculations show that the SOT due to the PtSe${}_2$ arises from an unexpectedly large spin splitting in the interfacial region of PtSe${}_2$ introduced by the proximity magnetic field of the Ni${}_{80}$Fe${}_{20}$ layer. Our results open up the possibilities of using large-area PtSe${}_2$ for energy-efficient nanoscale devices by utilizing the proximity-induced SOT.

arXiv comment18 pages, 4 figures

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Cited by in corpus (5)

• Inverse Rashba-Edelstein THz emission modulation induced by ferroelectricity in CoFeB/PtSe2/MoSe2//LiNbO3 systems
• Symmetry Enhanced Unconventional Spin Current Anisotropy in a Collinear Antiferromagnet
• Impact of the out-of-plane conductivity on spin transport evaluation in a van der Waals material
• Chiral orbital/spin textures and Edelstein effects in monolayer Janus TMDs
• Revealing the Breakdown Mechanism and Heat Dissipation in Few-Layered semimetallic PtSe2