title: Evidence for triplet superconductivity in a superconductor-ferromagnet spin valve.
abstract: We have studied the dependence of the superconducting (SC) transition temperature on the mutual orientation of magnetizations of Fe1 and Fe2 layers in the spin valve system CoO(x)/Fe1/Cu/Fe2/Pb. We find that this dependence is nonmonotonic when passing from the parallel to the antiparallel case and reveals a distinct minimum near the orthogonal configuration. The analysis of the data in the framework of the SC triplet spin valve theory gives direct evidence for the long-range triplet superconductivity arising due to noncollinearity of the two magnetizations.
authors.affiliation: Zavoisky Physical-Technical Institute, Kazan Scientific Center of Russian Academy of Sciences, Russia.
authors.forename: P V
authors.initials: PV
authors.lastname: Leksin
authors.forename: N N
authors.initials: NN
authors.lastname: Garif'yanov
authors.forename: I A
authors.initials: IA
authors.lastname: Garifullin
authors.forename: Ya V
authors.initials: YV
authors.lastname: Fominov
authors.forename: J
authors.initials: J
authors.lastname: Schumann
authors.forename: Y
authors.initials: Y
authors.lastname: Krupskaya
authors.forename: V
authors.initials: V
authors.lastname: Kataev
authors.forename: O G
authors.initials: OG
authors.lastname: Schmidt
authors.forename: B
authors.initials: B
authors.lastname: Büchner