Electrical properties of magnetic tunnel junctions affected by two types of interfacial roughness

The theoretical study has been done for investigating the effect of two types of rough interfacials on the electrical properties of a the magnetic tunneling structures. Surface roughness is found to have a strong influence on the spin polarized transport throughmagnetic tunneling junctions . The scattering mechanism because of rough interfaces causes to reduction of maximum achievable value of transmission probability resonance. Also, the presence of roughness interfacial causes to change in the spin polarization and the tunneling magnetoresistance ratios. The asymmetry distribution of the density of states may be reduced and the spin polarization and the tunneling magnetoresistance show the irregular behavior.