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This article is cited in 3 scientific papers (total in 3 papers)
XX International Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 13-16, 2017
Superconductivity
Phase transitions in hybrid SFS structures with thin superconducting layers
A. V. Samokhvalovab a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
b Lobachevsky State University of Nizhny Novgorod
Abstract:
Calculations of critical temperature $T_{c}$ of the phase transition to superconducting state of a superconductor/ferromagnet/superconductor (SFS) hybrid structure with proximity effect is performed on the base of linearized Usadel equations. It is shown that the proximity effect between $S$ and $F$ metals and the exchange interaction can induce an inhomogeneous superconducting state with longitudinal to layers $\Delta\propto\exp(ipz)$ modulation of the superconductivity order parameter, which is characterized by nonzero value of the wave number $p$, describing the Larkin–Ovchinnikov–Fulde–Ferrell instability. Influence of this instability on transitions between 0- and $\pi$-states of the $SFS$ structure is studied. It is shown that the 0–$\pi$ transition is accompanied by a nonmonotonic dependence of both the critical temperature $T_{c}$ and the effective penetration depth $\Delta$ of the magnetic field into the hybrid structure on the characteristic size of the ferromagnetic region.
Citation:
A. V. Samokhvalov, “Phase transitions in hybrid SFS structures with thin superconducting layers”, Fizika Tverdogo Tela, 59:11 (2017), 2123–2129; Phys. Solid State, 59:11 (2017), 2143–2149
Linking options:
https://www.mathnet.ru/eng/ftt9388 https://www.mathnet.ru/eng/ftt/v59/i11/p2123
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