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Effect of Interlayer Coupling on Current-Assisted Magnetization Switching in Nanopillars

S. Urazhdin·W. P. Pratt Jr·J. Bass
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Abstract

We show that dipole-field induced antiferromagnetic coupling, or RKKY ferromagnetic coupling, between Co layers can strongly affect the low magnetic field switching behavior of Co/Cu/Co nanopillars. Whereas current-assisted switching at low fields in uncoupled nanopillars is always hysteretic, strong coupling of either kind can change the switching to non-hysteretic (reversible). These differences can be understood with a simple picture of current-assisted thermal activation over a barrier.

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S. Urazhdin, W. P. Pratt Jr, J. Bass. 2003-04-12. Effect of Interlayer Coupling on Current-Assisted Magnetization Switching in Nanopillars. https://arxiv.org/abs/cond-mat/0304299

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