LAUSR

Abstract The effect of δ -potential was studied in GaAs/Ga0.6Al0·4As double barrier heterostructure with Dresselhaus spin-orbit interaction. The role of barrier height and position of the δ - potential in the well region was analysed on spin-dependent electron tunneling using transfer matrix method. The spin-separation between spin-resonances on energy scale depends on both height and position of the δ - potential, whereas the tunneling life time of electrons highly influenced by the position of the δ - potential and not on the height. These results might be helpful for the fabrication of spin-filters.