Abstract:
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/Сu/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.
Citation:
P. V. Leksin, A. A. Kamashev, N. N. Garif'yanov, A. A. Validov, Ya. V. Fominov, J. Schumann, V. E. Kataev, B. Büchner, I. A. Garifullin, “Experimental investigation of the role of the triplet pairing in the superconducting spin-valve effect”, Fizika Tverdogo Tela, 58:11 (2016), 2094–2103; Phys. Solid State, 58:11 (2016), 2165–2176
\Bibitem{LekKamGar16}
\by P.~V.~Leksin, A.~A.~Kamashev, N.~N.~Garif'yanov, A.~A.~Validov, Ya.~V.~Fominov, J.~Schumann, V.~E.~Kataev, B.~B\"uchner, I.~A.~Garifullin
\paper Experimental investigation of the role of the triplet pairing in the superconducting spin-valve effect
\jour Fizika Tverdogo Tela
\yr 2016
\vol 58
\issue 11
\pages 2094--2103
\mathnet{http://mi.mathnet.ru/ftt9767}
\elib{https://elibrary.ru/item.asp?id=27368804}
\transl
\jour Phys. Solid State
\yr 2016
\vol 58
\issue 11
\pages 2165--2176
\crossref{https://doi.org/10.1134/S1063783416110214}
Linking options:
https://www.mathnet.ru/eng/ftt9767
https://www.mathnet.ru/eng/ftt/v58/i11/p2094
This publication is cited in the following 1 articles:
Andrey Andreevich Kamashev, Nadir Nurgayazovich Garif'yanov, Aidar Azatovich Validov, Joachim Schumann, Vladislav Kataev, Bernd Büchner, Yakov Victorovich Fominov, Ilgiz Abdulsamatovich Garifullin, “Superconducting switching due to a triplet component in the Pb/Cu/Ni/Cu/Co2Cr1-xFexAly spin-valve structure”, Beilstein J. Nanotechnol., 10 (2019), 1458