Condensed Matter Physics, 2018, vol. 21, No. 4, 43702
DOI:10.5488/CMP.21.43702           arXiv:1812.08545

Title: The effect of an external magnetic field on the maximum current of SNINS junctions near the critical temperature
Author(s):
  O.Yu. Pastukh (Lesya Ukrainka Eastern European National University, 13 Voli Ave., 43000 Lutsk, Ukraine) ,
  V.E. Sakhnyuk (Lesya Ukrainka Eastern European National University, 13 Voli Ave., 43000 Lutsk, Ukraine) ,
  A.V. Svidzinsky (Lesya Ukrainka Eastern European National University, 13 Voli Ave., 43000 Lutsk, Ukraine)

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.

Key words: Josephson junctions, maximum current, magnetic flux, depairing effects
PACS: 74.50.+r


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