JETP Letters

, Volume 91, Issue 6, pp 308–313 | Cite as

Superconducting triplet spin valve

  • Ya. V. Fominov
  • A. A. Golubov
  • T. Yu. Karminskaya
  • M. Yu. Kupriyanov
  • R. G. Deminov
  • L. R. Tagirov
Condensed Matter


We study the critical temperature T c of SFF trilayers (S is a singlet superconductor, F is a ferromagnetic metal), where the long-range triplet superconducting component is generated at noncollinear magnetizations of the F layers. We demonstrate that T c can be a nonmonotonic function of the angle α between the magnetizations of the two F layers. The minimum is achieved at an intermediate α, lying between the parallel (P, α = 0) and antiparallel (AP, α = π) cases. This implies a possibility of a “triplet” spin-valve effect: at temperatures above the minimum T c Tr but below T c P and T c AP , the system is superconducting only in the vicinity of the collinear orientations. At certain parameters, we predict a reentrant T c (α) behavior. At the same time, considering only the P and AP orientations, we find that both the “standard” (T c P < T c AP ) and “inverse” (T c P > T c AP ) switching effects are possible depending on parameters of the system.


JETP Letter Switching Effect Ferromagnetic Layer Spin Valve Pair Breaking 
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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • Ya. V. Fominov
    • 1
  • A. A. Golubov
    • 2
  • T. Yu. Karminskaya
    • 3
  • M. Yu. Kupriyanov
    • 3
  • R. G. Deminov
    • 4
  • L. R. Tagirov
    • 4
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Faculty of Science and Technology and MESA + Institute of NanotechnologyUniversity of TwenteEnschedeThe Netherlands
  3. 3.Nuclear Physics InstituteMoscow State UniversityMoscowRussia
  4. 4.Physics FacultyKazan State UniversityKazanRussia

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