[8p-Z08-1~8] 10.4 Semiconductor spintronics, superconductor, multiferroics

▲ [8p-Z08-4] Influence of external temperature on interface spin polarization of ferromagnet-semiconductor heterostructures

〇Michihiro Yamada¹, Yu Shiratsuchi^2,1, Hiroto Kambe³, Kohei Kudo³, Shinya Yamada^1,3, Kentarou Sawano⁴, Ryoichi Nakatani^2,1, Kohei Hamaya^1,3 (1.CSRN, Osaka Univ., 2.GSE, Osaka Univ., 3.GSES, Osaka Univ., 4.ARL, Tokyo City Univ.)

Keywords:semiconructor spintronics, Germanium, spin injection

In this study, we investigate the temperature dependence of the interface spin polarization of ferromagnet (FM)/semiconductor (SC) heterostructures for SC-based lateral spin-valve (LSV) devices with various FM/SC interface conditions. For the high-quality FM-SC interfaces, the temperature evolution of interface spin polarization can be interpreted in terms of a model of the thermally excited spin waves in FM electrodes, similar to the case of magnetic tunnel junctions.