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Regular version of the site
Of all publications in the section: 6
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Article
Vasenko A. S., Kawabata S., Golubov A. A. et al. Physica C: Superconductivity and its Applications. 2010. Vol. 470. No. 19. P. 863-866.
We investigate superconductor/insulator/ferromagnet/superconductor (SIFS) tunnel Josephson junctions in the dirty limit, using the quasiclassical theory. We consider the case of a strong tunnel barrier such that the left S layer and the right FS bilayer are decoupled. We calculate quantitatively the density of states (DOS) in the FS bilayer for arbitrary length of the ferromagnetic layer, using a self-consistent numerical method. We compare these results with a known analytical DOS approximation, which is valid when the ferromagnetic layer is long enough. Finally we calculate quantitatively the current-voltage characteristics of a SIFS junction.
Added: Nov 29, 2017
Article
Aladyshkin A. Y., Nefedov I., Aladyshkina A. S. et al. Physica C: Superconductivity and its Applications. 2013. Vol. 492. P. 186-186.

In the original paper the affiliation of A.S. Aladyshkina was indicated incorrectly. The correct affiliations of all authors are as follows:

A.Yu. Aladyshkin., (1) I.M. Nefedov(1), A.S. Aladyshkina(2) and I.A. Shereshevskii(1). (1) Institute for Physics of Microstructures, Russian Academy of Sciences, GSP.105, Nizhny Novgorod 603950, Russia (2) National Research University Higher School of Economics, 25/12 Bolshaja Pecherskaja Ulitsa, Nizhny Novgorod 603155, Russia

Added: Feb 19, 2014
Article
Aladyshkin A., Nefedov I., Aladyshkina A. S. et al. Physica C: Superconductivity and its Applications. 2012. Vol. 479. P. 98-101.

We investigate numerically the formation of vortex–antivortex pairs in thin-film superconducting strip in the presence of a straight current-carrying wire, oriented perpendicular to this strip. We demonstrate that the change in the number of the trapped vortices/antivortices inside the strip near the current-carrying wire results in a oscillatory dependence of the critical current Ic on the magnitude of the control current Iw in the wire. We consider the effect of the width of the superconducting strip and the width of the control wire on the period and the amplitude of the dc-Josephson-like oscillations of the critical current.

 

Added: Nov 19, 2012
Article
Arutyunov K., Lehtinen J. S. Physica C: Superconductivity and its Applications. 2017. Vol. 533. P. 158-160.

Quantum phase slip (QPS) is the topological singularity of the complex order parameter of a quasi-one- dimensional superconductor: momentary zeroing of the modulus and simultaneous ’slip’ of the phase by ±2 π. The QPS event(s) are the dynamic equivalent of tunneling through a conventional Josephson junction containing static in space and time weak link(s). Here we demonstrate the operation of a su- perconducting single electron transistor ( Cooper pair transistor ) without any tunnel junctions. Instead a pair of thin superconducting titanium wires in QPS regime was used. The current–voltage characteristics demonstrate the clear Coulomb blockade with magnitude of the Coulomb gap modulated by the gate po- tential. The Coulomb blockade disappears above the critical temperature, and at low temperatures can be suppressed by strong magnetic field.

Added: Mar 22, 2016
Article
Kawabata S., Tanaka Y., Golubov A. A. et al. Physica C: Superconductivity and its Applications. 2011. Vol. 471. No. 21-22. P. 1199-1201.
We show a perturbation theory of the Josephson transport through ferromagnetic insulators (FIs). Recently we have found that the appearance of the atomic scale 0-pi transition in such junctions based on numerical calculations. In order to explore the mechanism of this anomalous transition, we have analytically calculated the Josephson current using the tunneling Hamiltonian theory and found that the spin dependent pi-phase shift in the FI barrier gives the atomic scale 0-pi transition. (C) 2011 Elsevier B.V. All rights reserved.
Added: Nov 29, 2017
Article
Arutyunov K., Lehtinen J. S. Physica C: Superconductivity and its Applications. 2017. Vol. 533. P. 158-160.

Quantum phase slip (QPS) is the topological singularity of the complex order parameter of a quasi-one- dimensional superconductor: momentary zeroing of the modulus and simultaneous ’slip’ of the phase by ±2 π. The QPS event(s) are the dynamic equivalent of tunneling through a conventional Josephson junction containing static in space and time weak link(s). Here we demonstrate the operation of a su- perconducting single electron transistor ( Cooper pair transistor ) without any tunnel junctions. Instead a pair of thin superconducting titanium wires in QPS regime was used. The current–voltage characteristics demonstrate the clear Coulomb blockade with magnitude of the Coulomb gap modulated by the gate po- tential. The Coulomb blockade disappears above the critical temperature, and at low temperatures can be suppressed by strong magnetic field.

Added: Nov 19, 2016