Current states in symmetrical SNINS junction for arbitrary concentrations of nonmagnetic impurities

Pastukh, Oleksandr; Sakhnyuk, Vasyl; Svidzinsky, A.V.

doi:10.1016/j.physleta.2018.05.035

Cited by 3 publications

(4 citation statements)

References 11 publications

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“…However, for the temperature close to the critical, such a reduced model cannot be used. In this region of temperature, the spatial nonhomogeneity of the order parameter near IS interface must be taken into account [19,20].…”

Section: Quasiclassical Equationsmentioning

confidence: 99%

Current-phase relation in layered superconducting structures of SIS’IS type

Shutovskyi¹,

Sakhnyuk²

2021

Condens. Matter Phys.

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The dependence of the current density on the phase difference is investigated considering the layered superconducting structures of a SIS’IS type. To simplify the calculations, the quasiclassical equations for the Green’s functions in a t-representation are derived. An order parameter is considered as a piecewise constant function. To consider the general case, no restrictions on the dielectric layer transparency and the thickness of the intermediate layer are imposed. It was found that a new analytical expression for the current-phase relation can be used with the aim to obtain a number of previously known results arising in particular cases.

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Section: Quasiclassical Equationsmentioning

confidence: 99%

Current-phase relation in layered superconducting structures of SIS’IS type

Shutovskyi¹,

Sakhnyuk²

2021

Condens. Matter Phys.

Self Cite

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“…For practical reasons, we take the vector potential oriented as follows: ì A = (0, −zH, 0). In work [31], where the current states in the superconducting SNINS junction near the critical temperature were investigated, it was shown that for certain values of junction parameters, the current-phase relation is different from the traditional sinusoidal dependence. A pronounced anharmonicity of the current is caused by the depairing effects action which are significant at small values of the normal metal thickness and non-small values of the electron transmission coefficient.…”

Section: Model and Basic Equationsmentioning

confidence: 99%

“…metal thickness and the length of electron free path affect the dependence of the maximum current in the junction on the magnetic flux. The result for the current-phase relation in SNINS junction is given by [31]…”

Section: -2mentioning

confidence: 99%

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The effect of an external magnetic field on the maximum current of SNINS junctions near the critical temperature

Pastukh¹,

Sakhnyuk²,

Svidzinsky³

2018

Condens. Matter Phys.

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The behaviour of superconducting junctions of SNINS-type (where S is superconductor, N is normal metal, I is insulator) with anharmonic current-phase relations in the external magnetic field near the critical temperature was investigated. The dependence of the maximum current on the value of the magnetic flux in a wide range of electron transmission coefficient values was considered. Also, it was investigated how the presence of a normal layer of an arbitrary thickness in the scale of coherence length and in the presence of impurities in superconducting regions affect the sensitivity of the maximum current to the magnetic field magnitude.

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Current density dependence on phase differences in superconducting tunnel junctions based on two-gap superconductors

Shutovskyi

Sakhnyuk

2021

Physica C: Superconductivity and its Applications

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Current states in symmetrical SNINS junction for arbitrary concentrations of nonmagnetic impurities

Cited by 3 publications

References 11 publications

Current-phase relation in layered superconducting structures of SIS’IS type

Current-phase relation in layered superconducting structures of SIS’IS type

The effect of an external magnetic field on the maximum current of SNINS junctions near the critical temperature

Current density dependence on phase differences in superconducting tunnel junctions based on two-gap superconductors

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