THE FERROMAGNETIC DOMAIN-WALL AS A GMR TRILAYER

By exploiting the simplicity of a novel transport measurement on a fer romagnetic striped domain structure in a thin film of cobalt, we repor t the first direct observation of ferromagnetic domain wall scattering and what we believe to be the first clear indication of giant magneto resistive effects (GMR) in a homogeneous magnetic system. A new model is proposed to describe these observations which highlights the crucia l role played by electron spin precession in determining the electrica l transport properties of magnetic interfaces.