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(a) Scanning electron microscopy/ image of the double tunnel junction. The central Au island has dimensions of (thickness); (b) Color-scaled differential conductance vs gate and drain bias.
MR for double tunnel junctions at (a) and (b) , respectively, as well as for double tunnel junctions at (c) and (d) , respectively, with the in-plane field applied parallel to the long (easy) axis of the Co electrode.
MR for double tunnel junctions with (a) in-plane field applied parallel and (b) perpendicular to the long (easy axis) of the Co electrode. (c) and (d) show similar measurements for junctions. in all measurements.
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