Line Plot from Scientific Research

I – V curves for the downstream voltage V D measured in 0 T at 17 mK for different magnetic-field-sweep histories. The magnitude of the negative slope at I d.c. = 0 depends on the history. See Supplementary Note 4 for details. Inset, An I – V curve up to ±70 nA dominated by the current-induced breakdown of the QAHE.

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