2003/10/20 by Sergei Urazhdin, S. Urazhdin, Norman O. Birge +7
Engineering · Physics and Astronomy · #Advanced Memory and Neural Computing #Magnetic properties of thin films #Theoretical and Computational Physics #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.cond-mat/0310472
To appear in the proceedings of the NATO advanced research workshop (2003)
arxiv created 2003/10/20 · arxiv updated 2009/12/01
We measure the dynamic resistance of a Co/Cu/Co trilayer nanopillar at varied magnetic field H and current I. The resistance displays the usual behavior, almost symmetric in H, both when magnetization switching is hysteretic at small I,H, and reversible at larger I,H. We show differences in the I,H magnetization stability diagram measured by holding I fixed and varying H and vice versa. We also show how the peak in dV/dI associated with telegraph noise in the reversible switching regime, is calculated from the telegraph noise variations with I. Lastly, we show data for a similar sample that displays behavior asymmetric in H, and a negative reversible switching peak instead of a usual positive one.