CURRENT-IN-PLANE MAGNETORESISTANCE - AN APPROACH TO BOUNDARY-CONDITIONS

The giant magnetoresistance effect is calculated for metallic magnetic superlattices with current-in-plane geometry by solving the semiclass ical Boltzmann transport equation. Two types of interface roughness wi ll be taken into account, geometrical interface roughness and scatteri ng at defects, impurities, etc. located at the interface. Within this approach, geometrical interface roughness with a finite correlation le ngth is considered. It is shown that geometrical interface roughness, without any other form of spin-dependent scattering, can result in a c onsiderable magnetoresistance.