title: Superconducting phase coherent electron transport in proximity conical ferromagnets.
abstract: 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.
authors.affiliation: Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom.
authors.forename: I
authors.initials: I
authors.lastname: Sosnin
authors.forename: H
authors.initials: H
authors.lastname: Cho
authors.forename: V T
authors.initials: VT
authors.lastname: Petrashov
authors.forename: A F
authors.initials: AF
authors.lastname: Volkov