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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2008, Volume 87, Issue 10, Pages 657–663
(Mi jetpl121)
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This article is cited in 21 scientific papers (total in 21 papers)
CONDENSED MATTER
Critical current in S-FNF-S Josephson structures with the noncollinear magnetization vectors of ferromagnetic films
T. Yu. Karminskayaa, M. Yu. Kupriyanova, A. A. Golubovb a Skobel'tsyn Institute of Nuclear Physics, Moscow State University, Moscow, 119992, Russia
b Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands
Abstract:
The critical current I C of S-FNF-S Josephson junctions, which are ferromagnet (F)-normal metal (N)-ferromagnet multilayer structures whose ends are in contact with the superconducting (S) electrodes, has been calculated. It has been shown that both the magnitude and sign of I C depends significantly on the misorientation angle α of the magnetization vectors M 1, 2 of the ferromagnetic films and the distance L between the superconducting electrodes. The effect of the triplet superconducting component ~〈;ψ↑ψ↑〉 ~〈;ψ↓ψ↓〉 appearing in the structure on I C(α) has been analyzed. It has been proven that a new type of the π junction exists, appearing due to the superposition of two contributions to I C that decrease monotonically with L and are damped at lengths about the coherence length of the normal metal. It has been shown that the effective control over the magnitude and sign of I C of the structure is achieved at a small deflection of the vectors M 1, 2 from the antiferromagnetic (M 1 ↑↓ M 2) configuration.
Received: 24.03.2008 Revised: 15.04.2008
Citation:
T. Yu. Karminskaya, M. Yu. Kupriyanov, A. A. Golubov, “Critical current in S-FNF-S Josephson structures with the noncollinear magnetization vectors of ferromagnetic films”, Pis'ma v Zh. Èksper. Teoret. Fiz., 87:10 (2008), 657–663; JETP Letters, 87:10 (2008), 570–576
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https://www.mathnet.ru/eng/jetpl121 https://www.mathnet.ru/eng/jetpl/v87/i10/p657
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Abstract page: | 346 | Full-text PDF : | 89 | References: | 30 |
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