Enhancement of GMR due to spin-mixing in magnetic multilayers with a superconducting contact

Details Enhancement of GMR due to spin-mixing in magnetic multilayers with a superconducting contact Enhancement of GMR due to spin-mixing in magnetic multilayers with a superconducting contact

2000-03-21

arxiv.org/abs/cond-mat/0003345v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevB.63.012404

We study the Giant Magnetoresistance (GMR) ratio in magnetic multiayers with a single superconducting contact in the presence of spin-mixing processes. It has been recently shown that the GMR ratio of magnetic multilayers is strongly suppressed by the presence of a superconducting contact when spin-flipping is not allowed. In this Letter we demonstrate that the GMR ratio can be dramatically enhanced by spin-orbit interaction and/or non-collinear magnetic moments. The system is described using a tight-binding model with either s-p-d or s-d atomic orbitals per site.

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