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(a) Nonlocal vs at 4.5 K for the Py/Ag LSV shown in the inset of (b). (b) vs for the same device. Inset: SEM image of the device adapted to show the nonlocal measurement configuration and direction of magnetic field .
Nonlocal spin valve signals of (a) as-grown Py/Ag LSV and (b) the same device after aging. and , . (b) Corresponding dependencies of the resistance for a portion of the Ag wire between Py1 and Py2 in the same device.
(a) BF STEM images of a Py/Ag junction in an as-grown device. (b) Corresponding O-map image obtained by EFTEM analysis. (c) BF STEM images of a Py/Ag junction in an aged device. (d) Corresponding O-map image obtained by EFTEM analysis.
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