Year: 2022
Type: article
Abstract: First-principles scattering calculations are used to investigate spin transport through interfaces between diffusive nonmagnetic metals where the symmetry lowering leads to an enhancement of the effect of spin-orbit coupling and to a discontinuity of the spin currents passing through the interfaces. From the conductance and local spin currents calculated for nonmagnetic bilayers, we extract values of the room-temperature interface resistance ${R}_{\mathrm{I}}$, of the spin memory-loss parameter $\ensuremath{\delta}$, and of the interface spin Hall angle ${\mathrm{\ensuremath{\Theta}}}_{\mathrm{I}}$ for nonmagnetic $\mathrm{Au}|\mathrm{Pt}$ and $\mathrm{Au}|\mathrm{Pd}$ interfaces using a frozen thermal disorder scheme to model finite temperatures. Substantial values of all three parameters are found with important consequences for experiments involving nonmagnetic spacer and capping layers. The temperature dependence of the interface parameters is determined for $\mathrm{Au}|\mathrm{Pt}$.
Institutions: University of Twente, Beijing Normal University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4296603858