Abstract
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 Tr c but below T P c and T AP c , 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 P c < T AP c ) and “inverse” (T P c > T AP c ) switching effects are possible depending on parameters of the system.
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References
L. R. Tagirov, Phys. Rev. Lett. 83, 2058 (1999).
A. I. Buzdin, A. V. Vedyayev, and N. V. Ryzhanova, Europhys. Lett. 48, 686 (1999); A. I. Buzdin, Rev. Mod. Phys. 77, 935 (2005).
Ya. V. Fominov, A. A. Golubov, and M. Yu. Kupriyanov, Pis’ma Zh. Eksp. Teor. Fiz. 77, 609 (2003) [JETP Lett. 77, 510 (2003)].
I. C. Moraru, W. P. Pratt, Jr., and N. O. Birge, Phys. Rev. B 74, 220507(R) (2006).
J. Y. Gu, C.-Y. You, J. S. Jiang, et al., Phys. Rev. Lett. 89, 267001 (2002).
A. Potenza and C. H. Marrows, Phys. Rev. B 71, 180503(R) (2005).
I. C. Moraru, W. P. Pratt, Jr., and N. O. Birge, Phys. Rev. Lett. 96, 037004 (2006).
G. Nowak, H. Zabel, K. Westerholt, et al., Phys. Rev. B 78, 134520 (2008).
A. Yu. Rusanov, S. Habraken, and J. Aarts, Phys. Rev. B 73, 060505(R) (2006).
R. Steiner and P. Ziemann, Phys. Rev. B 74, 094504 (2006).
A. Singh, C. Sürgers, and H. v. Löhneysen, Phys. Rev. B 75, 024513 (2007).
D. H. Kim and T. J. Hwang, Physica C 455, 58 (2007).
P. V. Leksin, R. I. Salikhov, I. A. Garifullin, et al., Pis’ma Zh. Eksp. Teor. Fiz. 90, 64 (2009) [JETP Lett. 90, 59 (2009)].
F. S. Bergeret, A. F. Volkov, and K. B. Efetov, Phys. Rev. Lett. 86, 4096 (2001); Rev. Mod. Phys. 77, 1321 (2005).
J. Linder, M. Zareyan, and A. Sudbø Phys. Rev. B 79, 064514 (2009).
S. Oh, D. Youm, and M. R. Beasley, Appl. Phys. Lett. 71, 2376 (1997).
K. Westerholt, D. Sprungmann, H. Zabel, et al., Phys. Rev. Lett. 95, 097003 (2005).
D. A. Ivanov and Ya. V. Fominov, Phys. Rev. B 73, 214524 (2006).
Ya. V. Fominov, N. M. Chtchelkatchev, and A. A. Golubov, Pis’ma Zh. Eksp. Teor. Fiz. 74, 101 (2001) [JETP Lett. 74, 96 (2001)]; Phys. Rev. B 66, 014507 (2002).
M. Yu. Kuprianov and V. F. Lukichev, Zh. Eksp. Teor. Fiz. 94, 139 (1988) [Sov. Phys. JETP 67, 1163 (1988)].
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Fominov, Y.V., Golubov, A.A., Karminskaya, T.Y. et al. Superconducting triplet spin valve. Jetp Lett. 91, 308–313 (2010). https://doi.org/10.1134/S002136401006010X
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DOI: https://doi.org/10.1134/S002136401006010X