Email this article Experimental investigation of the role of the triplet pairing in the superconducting spin-valve effect
- Authors: Leksin P.V.1,2, Kamashev A.A.1, Garif’yanov N.N.1, Validov A.A.1, Fominov Y.V.3,4, Schumann J.2, Kataev V.E.2, Büchner B.2,5, Garifullin I.A.1
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Affiliations:
- Kazan Zavoisky Physical-Technical Institute (KPhTI) of the Kazan Scientific Center of the Russian Academy of Sciences
- Leibniz Institute for Solid State and Materials Research (IFW Dresden)
- Landau Institute for Theoretical Physics of Russian Academy of Sciences
- Moscow Institute of Physics and Technology (State University)
- Institut für Festkörperphysik
- Issue: Vol 58, No 11 (2016)
- Pages: 2165-2176
- Section: Superconductivity
- URL: https://journal-vniispk.ru/1063-7834/article/view/199001
- DOI: https://doi.org/10.1134/S1063783416110214
- ID: 199001
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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 CoOx/Py1/Cu/Py2/Cu/Pb (where Py = Ni0.81Fe0.19) 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.
About the authors
P. V. Leksin
Kazan Zavoisky Physical-Technical Institute (KPhTI) of the Kazan Scientific Center of the Russian Academy of Sciences; Leibniz Institute for Solid State and Materials Research (IFW Dresden)
Email: ilgiz0garifullin@gmail.com
Russian Federation, Sibirskii tract 10/7, Kazan, Tatarstan, 420029; Helmholtzstraße 20, Dresden, 01069
A. A. Kamashev
Kazan Zavoisky Physical-Technical Institute (KPhTI) of the Kazan Scientific Center of the Russian Academy of Sciences
Email: ilgiz0garifullin@gmail.com
Russian Federation, Sibirskii tract 10/7, Kazan, Tatarstan, 420029
N. N. Garif’yanov
Kazan Zavoisky Physical-Technical Institute (KPhTI) of the Kazan Scientific Center of the Russian Academy of Sciences
Email: ilgiz0garifullin@gmail.com
Russian Federation, Sibirskii tract 10/7, Kazan, Tatarstan, 420029
A. A. Validov
Kazan Zavoisky Physical-Technical Institute (KPhTI) of the Kazan Scientific Center of the Russian Academy of Sciences
Email: ilgiz0garifullin@gmail.com
Russian Federation, Sibirskii tract 10/7, Kazan, Tatarstan, 420029
Ya. V. Fominov
Landau Institute for Theoretical Physics of Russian Academy of Sciences; Moscow Institute of Physics and Technology (State University)
Email: ilgiz0garifullin@gmail.com
Russian Federation, pr. Akademika Semenova 1-A, Chernogolovka, Moscow region, 142432; Institutskii per. 9, Dolgoprudnyi, Moscow region, 141700
J. Schumann
Leibniz Institute for Solid State and Materials Research (IFW Dresden)
Email: ilgiz0garifullin@gmail.com
Germany, Helmholtzstraße 20, Dresden, 01069
V. E. Kataev
Leibniz Institute for Solid State and Materials Research (IFW Dresden)
Email: ilgiz0garifullin@gmail.com
Germany, Helmholtzstraße 20, Dresden, 01069
B. Büchner
Leibniz Institute for Solid State and Materials Research (IFW Dresden); Institut für Festkörperphysik
Email: ilgiz0garifullin@gmail.com
Germany, Helmholtzstraße 20, Dresden, 01069; Dresden, D-01062
I. A. Garifullin
Kazan Zavoisky Physical-Technical Institute (KPhTI) of the Kazan Scientific Center of the Russian Academy of Sciences
Author for correspondence.
Email: ilgiz0garifullin@gmail.com
Russian Federation, Sibirskii tract 10/7, Kazan, Tatarstan, 420029
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