Abstract
The spin valve effect for the superconducting current based on the superconductor/ferromagnet proximity effect has been studied for a CoO x /Fe1/Cu/Fe2/Cu/Pb multilayer. The magnitude of the effect ΔT c = T AP c − T P c , where T P c and T AP c are the superconducting transition temperatures for the parallel (P) and antiparallel (AP) orientation of magnetizations, respectively, has been measured for different thicknesses of the Fe1 layer d Fe1. The obtained dependence of the effect on d Fe1 reveals that ΔT c can be increased in comparison with the case of a half-infinite Fe1 layer considered by the previous theory. A maximum of the spin valve effect occurs at d Fe1 ∼ d Fe2. At the optimal value of d Fe1 almost full switching from the normal to the superconducting state when changing the mutual orientation of magnetizations of the iron layers Fe1 and Fe2 from P to AP is demonstrated.
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References
S. Oh, D. Youm, and M. R. Beasley, Appl. Phys. Lett. 71, 2376 (1997).
L. R. Tagirov, Phys. Rev. Lett. 83, 2058 (1999).
A. I. Buzdin, A. V. Vedyayev, and N. V. Ryzhanova, Europhys. Lett. 48, 686 (1999).
J. Y. Gu, C.-Y. You, J. S. Jiang, et al., Phys. Rev. Lett. 89, 267001 (2002).
C.-Y. You, Ya. B. Bazaliy, J. Y. Gu, et al., Phys. Rev. B 70, 014505 (2004).
A. Potenza and C. H. Marrows, Phys. Rev. B 71, 180503 (2005).
V. Peña, Z. Sefrioui, D. Arias, et al., Phys. Rev. Lett. 94, 057002 (2005).
I. C. Moraru, W. P. Pratt, Jr., and N. O. Birge, Phys. Rev. Lett. 96, 037004 (2006); Phys. Rev. B 74, 220507(R) (2006).
G.-X. Miao, A. V. Ramos, and J. Moodera, Phys. Rev. Lett. 101, 137001 (2008).
K. Westerholt, D. Sprungmann, H. Zabel, et al., Phys. Rev. Lett. 95, 097003 (2005).
G. Nowak, H. Zabel, K. Westerholt, et al., Phys. Rev. B 78, 134520 (2008).
G. Nowak, K. Westerholt, and H. Zabel, Supercond. Sci. Technol. 26, 025004 (2013).
Ya. V. Fominov, A. A. Golubov, and M. Yu. Kupriyanov, JETP Lett. 77, 510 (2003).
Ya. V. Fominov, A. A. Golubov, T. Yu. Karminskaya, et al., JETP Lett. 91, 308 (2010).
P. V. Leksin, N. N. Garif’yanov, I. A. Garifullin, et al., Appl. Phys. Lett. 97, 102505 (2010).
P. V. Leksin, N. N. Garif’yanov, I. A. Garifullin, et al., Phys. Rev. Lett. 106, 067005 (2011).
P. V. Leksin, N. N. Garif’yanov, I. A. Garifullin, et al., Phys. Rev. B 85, 024502 (2012).
P. V. Leksin, N. N. Garif’yanov, I. A. Garifullin, et al., Phys. Rev. Lett. 109, 057005 (2012).
L. Lazar, K. Westerholt, H. Zabel, et al., Phys. Rev. B 61, 3711 (2000).
Ya. V. Fominov, N. M. Chtchelkatchev, and A. A. Golubov, Phys. Rev. B 66, 014507 (2002).
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Leksin, P.V., Kamashev, A.A., Garif’yanov, N.N. et al. Peculiarities of performance of the spin valve for the superconducting current. Jetp Lett. 97, 478–482 (2013). https://doi.org/10.1134/S0021364013080109
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DOI: https://doi.org/10.1134/S0021364013080109