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Regular version of the site

Article

Experimental Investigation of the Role of the Triplet Pairing in the Superconducting Spin-Valve Effect

Physics of the Solid State. 2016. Vol. 58. P. 2165-2176.
Leksin P., Kamashev A., Garif'yanov N., Validov A., Fominov Ya.V., Schumann J., Kataev V., Büchner B., Garifullin I.

An important role of the morphology of a superconducting layer in the superconducting spin-valve
effect has been established. The triplet pairing induced by the superconductor/ferromagnet proximity effect
has been experimentally investigated for samples CoO x /Py1/Cu/Py2/Cu/Pb (where Py = Ni 0.81 Fe 0.19 ) with
a smooth superconducting layer. The optimization of the parameters of this structure has demonstrated a
complete switching between the normal and superconducting states with a change in the relative orientation
of magnetizations of the ferromagnetic layers from the antiparallel to orthogonal orientation. A pure triplet
contribution has been observed for the sample with a permalloy layer thickness at which the superconducting
spin-valve effect vanishes. A direct comparison of the experimental data with the theoretical calculation of
the temperature of the transition to the superconducting state has been performed for the first time.