title: Unified first-principles study of gilbert damping, spin-flip diffusion, and resistivity in transition metal alloys.
abstract: Using a formulation of first-principles scattering theory that includes disorder and spin-orbit coupling on an equal footing, we calculate the resistivity ρ, spin-flip diffusion length l(sf), and Gilbert damping parameter α for Ni(1-x)Fe(x) substitutional alloys as a function of x. For the technologically important Ni(80)Fe(20) alloy, Permalloy, we calculate values of ρ = 3.5 ± 0.15 μΩ cm, l(sf) = 5.5 ± 0.3 nm, and α = 0.0046 ± 0.0001 compared to experimental low-temperature values in the range 4.2-4.8 μΩ cm for ρ, 5.0-6.0 nm for l(sf), and 0.004-0.013 for α, indicating that the theoretical formalism captures the most important contributions to these parameters.
authors.affiliation: Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: Anton A
authors.initials: AA
authors.lastname: Starikov
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Kelly
authors.forename: Arne
authors.initials: A
authors.lastname: Brataas
authors.forename: Yaroslav
authors.initials: Y
authors.lastname: Tserkovnyak
authors.forename: Gerrit E W
authors.initials: GE
authors.lastname: Bauer