First-principles study of the spin-mixing conductance in Pt/Ni${}_{81}$Fe${}_{19}$ junctions

Abstract

Based on the spin-pumping theory and first-principles calculations, the spin-mixing conductance (SMC) is theoretically studied for Pt/Permalloy (Ni${}_{81}$Fe${}_{19}$, Py) junctions. We evaluate the SMC for ideally clean Pt/Py junctions and examine the effects of interface randomness. We find that the SMC is generally enhanced in the presence of interface roughness as compared to the ideally clean junctions. Our estimated SMC is in good quantitative agreement with the recent experiment for Pt/Py junctions. We propose possible routes to increase the SMC in Pt/Py junctions by depositing a foreign magnetic metal layer in Pt, offering guidelines for designing the future spintronic devices.

Accepted for publication in Applied Physics Letters

References in corpus (2)

• Thermal Spin-Transfer Torques in Magnetoelectronic Devices
• Thermoelectric Effects in Magnetic Nanostructures

Cited by in corpus (14)

• Spin pumping damping and magnetic proximity effect in Pd and Pt spin-sink layers
• Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
• Irrelevance of magnetic proximity effect to spin-orbit torques in heavy metal/ferromagnet bilayers
• Enhancement of spin transparency by interfacial alloying
• Theory of Spin Hall Magnetoresistance from a Microscopic Perspective
• Determination of the spin Hall angle in single-crystalline Pt films from spin pumping experiments
• Origin of Strong Two-Magnon Scattering in Heavy Metal/Ferromagnet/Oxide Heterostructures
• Effective spin-mixing conductance of topological-insulator/ferromagnet and heavy-metal/ferromagnet spin-orbit-coupled interfaces: A first-principles Floquet-nonequilibrium-Green-function approach
• Interface-induced field-like optical spin torque in a ferromagnet/heavy metal heterostructure
• Enhancement of Spin-Charge Conversion Efficiency for Co${}_3$Sn${}_2$S${}_2$ across Transition from Paramagnetic to Ferromagnetic Phase
• Quantum spin pumping mediated by magnon
• Enhanced laser-induced single-cycle terahertz generation in a spintronic emitter with a gradient interface
• The temperature dependence of quantum spin pumping generated using electron spin resonance with three-magnon splittings
• A short note on spin pumping theory with Landau-Lifshitz-Gilbert equation under quantum fluctuation; necessity for quantization of localized spin