Influence of interface roughness on spin-polarized transmission in PbS/EuS double barrier structures

In this work, the effect of interface roughness/ islands has investigated on transmission probability for a type of magnetic tunnel junction (MTJ) which involves of two ferromagnetic semiconductor barriers (FMS) by periodic corrugation interfaces. Based on transfer matrix method and nearly free-electron approximation, the transmission probability is studied for several different temperatures. Also the variation of tunnelling magnetoresistance (TMR) and spin polarization (SP) as a function of temperature is studied. The results show that interface roughness effect decreases the transmission probability, but the interface islands do not shift the resonant energy.

کلیدواژه ها:

Interface roughness ، Transfer matrix method ، Magnetic Tunnel Junctions ، Spin-dependent tunnelling