Spin-dependent transport of hot electrons across a spin valve has been studied as function of temperature using a spin-valve transistor with a soft Ni80Fe20/Au/Co spin-valve base. Spin-dependent scattering makes the collector current highly sensitive to small magnetic fields that change the magnetic state of the base. The magnetocurrent approaches 400% at 100K but decays to about 240% at room temperature. The reduction is attributed to mixing of the two spin channels due to spin-flip scattering of hot electrons by thermal spin waves.
- SMI-NE: From 2006 in EWI-NE
- Spin-dependent scattering
- Spin valve
- Spin waves
Jansen, R., Vlutters, R., Anil Kumar, P. S., van 't Erve, O. M. J., Kim, S. D., & Lodder, J. C. (2001). Temperature dependence of magnetocurrent of hot electrons in a spin-valve transistor. Journal of magnetism and magnetic materials, 226-230(Part 1), 658-660. https://doi.org/10.1016/S0304-8853(00)00772-1