Superconducting phase coherent electron transport in proximity conical ferromagnets

Details Superconducting phase coherent electron transport in proximity conical ferromagnets Superconducting phase coherent electron transport in proximity conical ferromagnets

2005-11-03

arxiv.org/abs/cond-mat/0511077v1

Phys. Rev. Lett., 96, 157002 (2006).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.96.157002

We report superconducting phase-periodic conductance oscillations in ferromagnetic wires with interfaces to conventional superconductors. The ferromagnetic wires were made of Ho, a conical ferromagnet. The distance between the interfaces was much larger than the singlet superconducting penetration depth. We explain the observed oscillations as due to the long-range penetration of an unusual "helical" triplet component of the order parameter that is generated at the superconductor/ferromagnet interfaces and maintained by the intrinsic rotating magnetization of Ho.

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