Abstract
The properties of Josephson junctions with a barrier made of a PdFe weakly ferromagnetic alloy with an iron content of about 1 at % have been studied. It has been shown that this alloy is a weak ferromagnet with a Curie temperature of 10–15 K in the required thickness range of 30–50 nm. The effect of the domain structure and magnetic prehistory of the ferromagnetic barrier on the critical current of a junction and the form of the Josephson characteristics has been demonstrated. The application of these junctions as magnetic switches has been proposed.
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References
A. I. Buzdin, L. N. Bulaevskii, and S. V. Panyukov, JETP Lett. 35, 178 (1982).
L. N. Bulaevskii, V. V. Kuzii, and A. A Sobyanin, JETP Lett. 25, 290 (1977).
A. I. Buzdin, V. Vuichich, and M. Yu. Kupriyanov, Sov. Phys. JETP 74, 124 (1992).
V. V. Ryazanov, V. A. Oboznov, A. Yu. Rusanov, et al., Phys. Rev. Lett. 86, 2427 (2001).
T. Kontos, M. Aprili, J. Lesueur, et al., Phys. Rev. Lett. 89, 137007 (2002).
H. Sellier, C. Baraduc, F. Lefloch, et al., Phys. Rev. B 68, 054531 (2003).
V. A. Oboznov, V. V. Bol’ginov, A. K. Feofanov, et al., Phys. Rev. Lett. 96, 197003 (2006).
O. Bourgeois, P. Gandit, A. Sulpice, et al., Phys. Rev. B 63, 064517 (2001).
V. V. Ryazanov, V. A. Oboznov, A. V. Veretennikov, et al., Phys. Rev. B 65, 020501 (2002).
S. M. Frolov, D. J. Van Harlingen, V. A. Oboznov, et al., Phys. Rev. B 70, 144505 (2004).
S. M. Frolov, M. J. A. Stoutimore, T. A. Crane, et al., Nature Phys. 4, 32 (2008).
J. W. A. Robinson, S. Piano, G. Burnell, et al., Phys. Rev. Lett. 97, 177003 (2006).
A. A. Bannykh, J. Pfeiffer, V. S. Stolyarov, et al., Phys. Rev. B 79, 054501 (2009).
J. W. A. Robinson, S. Piano, G. Burnell, et al., Phys. Rev. B 76, 094522 (2007).
M. Weides, Appl. Phys. Lett. 93, 52502 (2008).
M. I. Khabipov, D. V. Balashov, F. Maibaum, et al., Supercond. Sci. Technol. 23, 045032 (2010).
A. K. Feofanov, V. A. Oboznov, V. V. Bol’ginov, et al., Nature Phys. 6, 593 (2010).
I. S. Veshchunov, V. A. Oboznov, A. N. Rossolenko, et al., JETP Lett. 88, 758 (2008).
V. V. Ryazanov, Phys. Usp. 42, 825 (1999).
T. S. Khaire, W. P. Pratt, Jr., and N. O. Birge, Phys. Rev. B 79, 094523 (2009).
K. Senapati, M. G. Blamire, and Z. H. Barber, Nature Mater. 10, 849 (2011).
E. G. Stoner, Proc. R. Soc. A 165, 372 (1938).
C. Buscher, T. Auerswald, E. Scheer, et al., Phys. Rev. B 46, 983 (1992).
R. Karplus and J. M. Luttinger, Phys. Rev. 95, 1154 (1954).
V. V. Schmidt, The Physics of Superconductors: Introduction to Fundamentals and Applications (MTsNMO, Moscow, 2000; Springer, New York, 2002), Chap. 4.
V. V. Ryazanov, V. V. Bol’ginov, D. S. Sobanin, et al., in Proceedings of the Superconductivity Centennial Conference, The Hague, The Netherlands, 2011, Phys. Proc. (2012, in press).
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Original Russian Text © V.V. Bol’ginov, V.S. Stolyarov, D.S. Sobanin, A.L. Karpovich, V.V. Ryazanov, 2012, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2012, Vol. 95, No. 7, pp. 408–413.
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Bol’ginov, V.V., Stolyarov, V.S., Sobanin, D.S. et al. Magnetic switches based on Nb-PdFe-Nb Josephson junctions with a magnetically soft ferromagnetic interlayer. Jetp Lett. 95, 366–371 (2012). https://doi.org/10.1134/S0021364012070028
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DOI: https://doi.org/10.1134/S0021364012070028