Spin-orbit-coupling induced domain-wall resistance in diffusive ferromagnets

Abstract

We investigate diffusive transport through a number of domain wall (DW) profiles of the important magnetic alloy Permalloy taking into account simultaneously noncollinearity, alloy disorder, and spin-orbit coupling fully quantum mechanically, from first principles. In addition to observing the known effects of magnetization mistracking and anisotropic magnetoresistance, we discover a not-previously identified contribution to the resistance of a DW that comes from spin-orbit-coupling-mediated spin-flip scattering in a textured diffusive ferromagnet. This adiabatic DW resistance, which should exist in all diffusive DWs, can be observed by varying the DW width in a systematic fashion in suitably designed nanowires.

5 pages, 4 figures

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• Direct Method for Calculating Temperature-Dependent Transport Properties
• Calculating the transport properties of magnetic materials from first-principles including thermal and alloy disorder, non-collinearity and spin-orbit coupling
• Topological Hall and Spin Hall Effects in Disordered Skyrmionic Textures
• Thermal Stability and Electrical Control of Magnetization of Heusler/Oxide Interface and Non-collinear Spin Transport of Its Junction
• Gilbert damping in noncollinear ferromagnets
• Spin-orbit-coupling induced torque in ballistic domain walls: equivalence of charge-pumping and nonequilibrium magnetization formalisms
• Calculating the spin memory loss at Cu$|$metal interfaces from first principles
• Scaling of intrinsic domain wall magneto-resistance with confinement in electromigrated nanocontacts
• Anisotropic Spin Relaxation Induced by Surface Spin-Orbit Effects
• Domain-wall free energy in Heisenberg ferromagnets