Non-conformal interface roughness effects on the giant magnetoresistance in magnetic multilayers
G. Palasantzas1 , J. Barnaś2 , T. Th. M. De Hosson1
1 Department of Applied Physics, Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands
2 Department of Physics, A. Mickiewicz University, ul. Umultowska 85, 61-614 Poznań, Poland
Surface Science, 482-485, 1026-1029 (2001)
We study interface roughness effects on the giant magnetoresistance in magnetic multilayers with non-conformal correlated interfaces. The roughness of each interface is characterized by the roughness exponent H (0<=H<1), in-plane correlation length ξ, and rms roughness amplitude Δ. It is shown that the magnetoresistance depends on all the roughness parameters: Δ, H and ξ. The case where the roughness parameters of consecutive interfaces are different due to cross-correlations is also studied.