Tunable transport in magnetically coupled MoGe/Permalloy hybrids

Belkin, A.; Novosad, V.; Iavarone, M.; Fedor, J.; Pearson, J. E.; Petrean-Troncalli, A.; Karapetrov, G.
August 2008
Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p072510
Academic Journal
We demonstrate controlled magnetotransport anisotropy of magnetically coupled superconductor-ferromagnet MoGe/Permalloy hybrids. The rotatable anisotropy Permalloy ferromagnet with stripe domain structure induces in-plane anisotropy in superconducting order parameter. We show that near the superconductor-normal state phase boundary the superconductivity in MoGe is localized in narrow mesoscopic channels just above the magnetic domain walls. Changing the in-plane direction of magnetic stripe domains it is possible to reconfigure the direction of the superconducting channels and controllably rotate the direction of the in-plane anisotropy axis in the superconductor.


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