JETP Letters

, Volume 108, Issue 9, pp 601–604 | Cite as

Mobile Dopants in Inhomogeneous Superconductors

  • I. V. Sokolovskii
  • S. A. Ktitorov
  • A. Yu. ZyuzinEmail author
Condensed Matter


We consider a superconductor hosting mobile impurities, which locally change the superconducting transition temperature. The BCS interaction at the impurity is different both in magnitude and in sign from the BCS interaction in the bulk. It is shown that due to the attraction between impurities, they tend to form more condensed state. We also consider the distribution of mobile impurities with local BCS attraction or repulsion at the vicinity of the superconductor–normal metal interface.


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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • I. V. Sokolovskii
    • 1
  • S. A. Ktitorov
    • 1
    • 2
  • A. Yu. Zyuzin
    • 2
    Email author
  1. 1.The First Electrotechnical University LETISt. PetersburgRussia
  2. 2.Ioffe Physical–Technical InstituteRussian Academy of SciencesSt. PetersburgRussia

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