Domain wall induced magnetoresistance in a superconductor/ferromagnet nanowire

In a nanowire consisting of a ferromagnet/insulator/superconductor multilayer structure, the superconductivity is shown to depend strongly on the configuration of the magnetic domain walls in the neighboring ferromagnetic layer, yielding a high magnetoresistance within a temperature range near the superconducting transition temperature T[subscript C]. Micromagnetic simulations confirmed that out-of-plane stray magnetic fields from uncompensated magnetic poles play a dominant role in inducing magnetoresistance in this particular system.Institute for Nanoelectronics Discovery and ExplorationNational Science Foundation (U.S.). Division of Materials Research (0504158