Interface enhancement of Gilbert damping from first-principles

Abstract

The enhancement of Gilbert damping observed for Ni80Fe20 (Py) films in contact with the non-magnetic metals Cu, Pd, Ta and Pt, is quantitatively reproduced using first-principles scattering theory. The "spin-pumping" theory that qualitatively explains its dependence on the Py thickness is generalized to include a number of factors known to be important for spin transport through interfaces. Determining the parameters in this theory from first-principles shows that interface spin-flipping makes an essential contribution to the damping enhancement. Without it, a much shorter spin-flip diffusion length for Pt would be needed than the value we calculate independently.

References in corpus (5)

• Non-collinear Magnetoelectronics
• Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Experimental Verification of Comparability between Spin-Orbit and Spin-Diffusion Lengths
• The temperature dependence of quantum spin pumping generated using electron spin resonance with three-magnon splittings

Cited by in corpus (22)

• Spin-orbit torques in heavy metal/ferromagnet bilayers with varying strength of interfacial spin-orbit coupling
• Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
• Enhanced spin-orbit torque via modulation of spin current absorption
• Fully Spin-transparent magnetic interfaces enabled by insertion of a paramagnetic NiO layer
• Switching of Perpendicular Magnetization by Spin-Orbit Torque
• Spin-memory loss due to spin-orbit coupling at ferromagnet/heavy-metal interfaces: Ab initio spin-density matrix approach
• Direct Method for Calculating Temperature-Dependent Transport Properties
• Enhancement of spin transparency by interfacial alloying
• Spin-Scattering Rates in Metallic Thin Films Measured by Ferromagnetic Resonance Damping Enhanced by Spin-Pumping
• Determination of the spin Hall angle, spin mixing conductance and spin diffusion length in Ir/CoFeB for spin-orbitronic devices
• Effects of transition-metal spacers on the spin-orbit torques, spin Hall magnetoresistance, and magnetic anisotropy of Pt/Co bilayers
• Mode-Dependent Damping in Metallic Antiferromagnets Due to Inter-Sublattice Spin Pumping
• Calculating spin transport properties from first principles: spin currents
• Spin diffusion and torques in disordered antiferromagnets
• Near-Unity Spin Hall Ratio in Ni${}_x$Cu${}_{1-x}$ Alloys
• Consistent microscopic analysis of spin pumping effects
• Strongly Enhanced Gilbert Damping in 3d Transition Metal Ferromagnet Monolayers in Contact with Topological Insulator Bi2Se3
• Calculating the spin memory loss at Cu$|$metal interfaces from first principles
• Determining complex spin mixing conductance and spin diffusion length from spin pumping experiments in magnetic insulator/heavy metal bilayers
• Magnetic damping anisotropy in the two-dimensional van der Waals material Fe${}_3$GeTe${}_2$ from first principles
• Spin-memory loss induced by bulk spin-orbit coupling at ferromagnet/heavy-metal interfaces
• Calculating interface transport parameters at finite temperatures: Nonmagnetic interfaces