title: Thermal spin-wave scattering in hot-electron magnetotransport across a spin valve.
abstract: The role of thermal scattering in spin-dependent transport of hot electrons at 0.9 eV is studied using a spin-valve transistor with a soft Ni(80)Fe(20)/Au/Co base. Spin-dependent scattering makes the collected electron current depend sensitively on the magnetic state of the base. The magnetocurrent reaches 560% at 100 K, decays with increasing temperature, and a huge effect of 350% still remains at room temperature. The results demonstrate that thermal spin waves produce quasielastic spin-flip scattering of hot electrons, resulting in mixing of the two spin channels.
authors.affiliation: Information Storage Technology Group, MESA+ Research Institute, University of Twente, 7500 AE Enschede, The Netherlands.
authors.forename: R
authors.initials: R
authors.lastname: Jansen
authors.forename: P S
authors.initials: PS
authors.lastname: Anil Kumar
authors.forename: O M
authors.initials: OM
authors.lastname: van't Erve
authors.forename: R
authors.initials: R
authors.lastname: Vlutters
authors.forename: P
authors.initials: P
authors.lastname: de Haan
authors.forename: J C
authors.initials: JC
authors.lastname: Lodder