FIRST PRINCIPLES NON-COLLINEAR TRANSPORT CALCULATION AND INTERFACIAL SPIN-FLIPPING OF Cu/Co MULTILAYERS.

In this paper, the first principle non-collinear transport calculation for Cu/Co(111) including interfacial spin-flipping was performed. We modeled spin-flipping at the interface by assuming a non-collinear magnetic structure with random magnetization orientation which satisfied the Gaussian distribution along the average magnetization direction. The relationship between spin-dependent conductance including interfacial spin-flipping and random magnetization orientation distribution width was obtained. For certain distribution width, our defined spin-flipping ratio coincides with the range of experimental spin-flipping probability P = 1-e-δ, where δ = 0.25±0.1. The magnetoresistance in the Co/Cu/Co spin-valve system including interfacial spin-flipping has also been calculated. [ABSTRACT FROM AUTHOR]