Enhancement of spin transparency by interfacial alloying

Abstract

We report that atomic-layer alloying (intermixing) at a Pt/Co interface can increase, by approximately 30%, rather than degrade the interfacial spin transparency, and thereby strengthen the efficiency of the dampinglike spin-orbit torque arising from the spin Hall effect in the Pt. At the same time, this interfacial alloying substantially reduces fieldlike spin-orbit torque. Insertion of an ultrathin magnetic alloy layer at heavy-metal/ferromagnet interfaces represents an effective approach for improving interfacial spin transparency that may enhance not only spin-orbit torques but also the spin detection efficiency in inverse spin Hall experiments.

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Cited by in corpus (16)

• Effective spin-mixing conductance of heavy-metal-ferromagnet interfaces
• Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
• Non-trivial charge-to-spin conversion in ferromagnetic metal/Cu/Al2O3 by orbital transport
• Fully Spin-transparent magnetic interfaces enabled by insertion of a paramagnetic NiO layer
• Disorder Dependence of Interface Spin Memory Loss
• Ultrafast spin-currents and charge conversion at 3d-5d interfaces probed by time-domain terahertz spectroscopy
• Deterministic Generation and Guided Motion of Magnetic Skyrmions by Focused He${}^{+}$-Ion Irradiation
• Lack of simple correlation between switching current density and spin-orbit torque efficiency of perpendicularly magnetized spin-current generator/ferromagnet heterostructures
• Origin of Strong Two-Magnon Scattering in Heavy Metal/Ferromagnet/Oxide Heterostructures
• Interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque in Au1-xPtx/Co bilayers with varying interfacial spin-orbit coupling
• Boosting spin-orbit torque efficiency in spin-current generator/magnet/oxide superlattices
• Effect of interfacial intermixing on spin-orbit torque in Co/Pt bilayers
• Write asymmetry of spin-orbit torque memory induced by in-plane magnetic fields
• Revealing the importance of interfaces for pure spin current transport
• Spin transport and magnetic proximity effect in CoFeB/normal metal/Pt trilayers
• Spin-to-charge conversion in orthorhombic RhSi topological semimetal crystalline thin films