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 Ni80Fe20/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.
- SMI-NE: From 2006 in EWI-NE
Jansen, R., Anil Kumar, P. S., van 't Erve, O. M. J., Vlutters, R., de Haan, P., & Lodder, J. C. (2000). Thermal Spin-Wave Scattering in Hot-Electron Magnetotransport Across a Spin Valve. Physical review letters, 85(15), 3277-3280. https://doi.org/10.1103/PhysRevLett.85.3277