Sosnin, I , Cho, H , Petrashov, Victor and Volkov, A F (2006) Superconducting phase coherent electron transport in proximity conical ferromagnets. Physical Review Letters, 96 (15).
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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.
This is a Submitted version This version's date is: 21/4/2006 This item is not peer reviewed
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