Isolation of proximity-induced triplet pairing channel in a superconductor/ferromagnet spin valve

Research output: Contribution to journalConference articleContributedpeer-review

Contributors

  • Andrey Kamashev - , RAS - Zavoisky Physical-Technical Institute, Kazan Scientific Center (Author)
  • Aidar Validov - , RAS - Zavoisky Physical-Technical Institute, Kazan Scientific Center (Author)
  • Nadir Garif'yanov - , RAS - Zavoisky Physical-Technical Institute, Kazan Scientific Center (Author)
  • Yakov Fominov - , RAS - Landau Institute for Theoretical Physics, Moscow Institute of Physics and Technology (Author)
  • Pavel Leksin - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Joachim Schumann - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Jürgen Thomas - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Vladislav Kataev - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Bernd Büchner - , Chair of Experimental Solid State Physics, Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Ilgiz Garifullin - , RAS - Zavoisky Physical-Technical Institute, Kazan Scientific Center (Author)

Abstract

In the present work we have studied the proximity-induced superconducting triplet pairing in CoOx/Py1/Cu/Py2/Cu/Pb spin-valve structure (where Py = Ni0:81Fe0:19). For CoOx(3 nm)/Py(3 nm)/Cu(4 nm)/Py(0.6 nm)/Cu(2 nm)/Pb(70 nm) we have studied the dependence of the Tc on the angle α between the direction of the cooling field and the external field both applied in the plane of the sample. We obtained that the Tc does not change monotonically with the angle but passes through a minimum. To observe an "isolated" triplet spin-valve effect we exploited the oscillatory feature of the magnitude of the ordinary spin-valve effect ΔTc in the dependence of the Py2-layer thickness dPy2. We determined the value of dPy2 at which ΔTc caused by the ordinary spin-valve effect is suppressed. This means that the difference in the Tc between the antiparallel and parallel mutual orientation of magnetizations of the Py1 and Py2 layers is zero. For such a sample a "pure" triplet spin-valve effect which causes the minimum in Tc at the orthogonal configuration of magnetizations has been observed.

Details

Original languageEnglish
Article number08001
JournalEPJ Web of Conferences
Volume185
Publication statusPublished - 4 Jul 2018
Peer-reviewedYes

Conference

Title2017 Moscow International Symposium on Magnetism, MISM 2017
Duration1 - 5 July 2017
CityMoscow
CountryRussian Federation

Keywords

ASJC Scopus subject areas