Highly efficient spin filtering of ballistic electrons
ΣυγγραφέαςSteinmuller, S. J.
Cho, W. S.
Lew, W. S.
Vaz, C. A. F.
Bland, J. A. C.
SourcePhysical Review B - Condensed Matter and Materials Physics
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MetadataΕμφάνιση πλήρους εγγραφής
Spin dependent electron transport in hybrid Au/Co/Cu/NiFe/n-GaAs spin valve Schottky barrier structures was investigated using photoexcitation at various wavelengths. For excitation with the photon energy well above the Schottky barrier height we found a ~2400% increase in helicity dependent photocurrent on switching the spin valve from parallel to antiparallel alignment. Our observations provide clear evidence for highly efficient spin filtering of spin polarized ballistic electrons.