ИСТИНА

We investigate the critical temperature Tc of SF1F2 structures (S is a singlet superconductor, F1 and F2 are ferromagnetic metals, identical in our case), where the long-range triplet superconducting pairing is generated at canted magnetizations of the F layers [1]. Earlier we demonstrated that critical temperature Tc in the semi-infinite SF1F2 structures can be a non-monotonic function of the angle α between magnetizations of the two F layers [2], against the monotonic Tc(α) behavior obtained for the F1SF2 trilayers [3]. It was shown a short time ago [4] the existence of the anomalous dependence of the spin-triplet pairing correlations on the angle α in SF1F2 structures in a limit of thin F layers. We examine the spin-singlet and spin-triplet pairing distributions and amplitudes as a function of the layers thicknesses at different values of the angle α in SF1F2 superconducting spin-valve designs to clarify which one of the pairings and how may impact on the superconducting spin-valve switching modes in the heterostructures. The support by RFBR (grants No. 16-02-01171-a, 14-02-31002-mol_a, 15-32-20362-bel_a_ved), DFG and by the Program of Competitive Growth of Kazan Federal University is gratefully acknowledged. 1. Bergeret, F.S. Odd triplet superconductivity and related phenomena in superconductor-ferromagnet structures [Text] / F.S. Bergeret, A.F. Volkov, K.B. Efetov // Rev. Mod. Phys. – 2005. – V. 77. – P. 1321–1373. 2. Superconducting triplet spin valve [Text] / Ya.V. Fominov [et al.] // JETP Lett. – 2010. – V. 91. – P. 308–313. 3. Fominov, Ya.V. Triplet proximity effect in FSF trilayers [Text] / Ya.V. Fominov, A.A. Golubov, M.Yu. Kupriyanov // JETP Lett. – 2003. – V. 77. – P. 510–515. 4. Karminskaya, T.Yu. Anomalous proximity effect in spin-valve superconductor/ferromagnetic metal/ferromagnetic metal structures [Text] / T.Yu. Karminskaya, A.A. Golubov, M.Yu. Kupriyanov // Phys. Rev. B. – 2011. – V. 84. – P. 064531.