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Magnetic conducting atomic force microscopy (mc-AFM) measurements on stacks of chiral and achiral Zn-porphyrins. (A) The experimental setup. The current as a function of the applied voltage obtained from the chiral (B) and achiral (C) Zn-porphyrin molecules. The insets show corresponding histograms of currents obtained at 3 V for the two opposite magnetic orientations of the tip.
