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. 2014 Oct 1;4:6509. doi: 10.1038/srep06509

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(a) Variation of GMR as a function of time showing two different steps of resistance which correspond to two different positions of the pinned DW. The inset is a zoom of the plateau of resistance. (b) Cumulative functions P(t) of the DW pinned on the two different positions (blue and red curves). The corresponding processes follow a single exponential law, with mean pinning time τ₁₂ and τ₂₃, respectively. The green curve corresponds to the total pinning process, and exhibits a zero derivative at t = 0.