Influence of the rough interface CoZr/Cu on the magnetoresistance in spin-valve sandwich CoZr/Cu/Co

M Faris, M. El Harfaoui, A. Qachaou, J. Ben Youssef, H. Le Gall, D. Meziane Mtalsi

Abstract


The magnetoresistance (MR) of the sandwich CoZr/Cu/Co at 300K has been investigated. The MR behaviour versus the thickness of the CoZr magnetic layer exhibits a maximum (≈ 3,6%) at tCoZr = 30 Å, over which a significant decrease is observed. The representation of the interface CoZr/Cu by a mixed zone in the Johnson-Camley semi-classical model reproduces well the experimental results, showing up the important role of the interface quality on the electronic transport properties.

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