title: Temperature-dependent asymmetry of the nonlocal spin-injection resistance: evidence for spin nonconserving interface scattering.
abstract: We report nonlocal spin injection and detection experiments on mesoscopic Co-Al2O3-Cu spin valves. We have observed a temperature-dependent asymmetry in the nonlocal resistance between parallel and antiparallel configurations of the magnetic injector and detector. This strongly supports the existence of a nonequilibrium resistance that depends on the relative orientation of the detector magnetization and the nonequilibrium magnetization in the normal metal providing evidence for increasing interface spin scattering with temperature.
authors.affiliation: Department of Physics and Center for Superconductivity Research, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Samir
authors.initials: S
authors.lastname: Garzon
authors.forename: Igor
authors.initials: I
authors.lastname: Zutić
authors.forename: Richard A
authors.initials: RA
authors.lastname: Webb