For an efficient spin-transport in a two-dimensional electron gas system, control of ferromagnet-semiconductor interface resistance is a very crucial factor and the clear spin-signal is detected in the range of 4 - 50 Ω μm2 in our experiments. The magnetoresistance of the local spin-valve measurement slowly reduces with increasing temperature, but ΔR/R remains near 1% at room temperature. Based on the experimental results and calculations, our InAs channel system shows strong possibility for a spin transistor application.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics