Registration Number
0218U005589,
0118U005404
, R & D reports
Title
Influence of spatial inhomogeneity and time dependent perturbations on the properties of the superconducting junctions
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Head
Zolotaryuk Yaroslav Oleksandrovych, Доктор фізико-математичних наук
Registration Date
28-12-2018
Organization
Bogolyubov Institute for Theoretical Physics of National Academy of Sciences of Ukraine
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The diagram of existence of the embedded or non-radiating solitons on the plane of "velocity- bond constant" parameters for an annular array of SFS junctions is constructed with taken into account the inductive coupling between the neighbors cells, it is shown that the region of these solitons existence is expanded if the coefficient of mutual inductance is negative, current-voltage characteristics (CVC) of the junction are calculated and it is demonstrated that the presence of the embedded soliton on the CVC is manifested as an inaccessible voltage interval. For the overdamped SFS contact it is shown that the average time of staying in the superconducting state increases if the second harmonic of the current-phase relation is negative and, vice versa, decreases if it is positive. Using the Green's function method, we obtained the new analytical results for the dependence of current on the phase difference for the SIS'IS contact and SIS contact consisting of two-gap superconductors. The expression for SIS'IS contact is valid for an arbitrary value of the electrons passage coefficient and the thickness of the intermediate S' layer. An assessment of the obtained result correctness is its consistency with known results for the limiting cases of low barrier transparency and the transition to a certain dependence for SIS contact - if the thickness of the S' layer is set to zero.
Product Description
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Золотарюк Ярослав Олександрович
Сахнюк Василь Євгенович
Свідзинський Анатолій Вадимович
Стародуб Іван Олексійович
Шутовський Арсен Миколайович
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2020-04-02
