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.
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机译：我们测量各种磁场H和电流I处的CO / CO / CO三层纳米玻璃的动态电阻。电阻显示常规行为，几乎对称的H，磁化切换在小I，H和可逆的情况下较大的I，H.我们在通过保持I固定和变化H来测量I，H磁化稳定性图的差异，反之亦然。我们还展示了在可逆切换制度中的电报噪声中的DV / DI相关的峰值是如何从电报噪声变化与I.最后的电报变化计算的。我们为显示H中不对称的行为的类似样本和负可逆的数据显示数据切换峰值而不是通常的正面。
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