ZH Ebrahiminejad - Physics Group, K.N.Toosi University of Technology , Tehran, Iran
A.A Shokri - Physics Group, Payame Noor University (PNU), Tehran, Iran, Computational Physical Sciences Research Laboratory, Department of Nano-Sciense (IPM), Tehran, Iran
S.F Masoudi - Physics Group, K.N.Toosi University of Technology , Tehran, Iran

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.

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