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Discontinuous Resistance Change and Domain Wall Scattering in Patterned NiFe Wires With a Nanoconstriction
2004
IEEE transactions on magnetics
Preserved Fulltext
A nonlinear current-voltage ( -) characteristic was observed in patterned NiFe wires with a central "bow-tie" point contact constriction. By passing a dc current through the wire, a sharp resistance drop was obtained for current densities in the range of 1.1-1.4 10 7 A/cm 2 . This is attributed to current-induced domain wall drag, resulting in displacement of a domain wall away from the constriction. A maximum current-induced resistance change of 0.079% was obtained for a 100-nm constriction,
doi:10.1109/tmag.2004.832369
fatcat:io32dc4bc5fvlhiy4trcrylsta