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Generation of Terahertz oscillations by thin superconducting film in fluctuation regime

  • Todor M. MishonovEmail author
  • Albert M. Varonov
  • Ioulia Chikina
  • Andrey A. Varlamov
Regular Article
  • 12 Downloads

Abstract

Explicit analytical expressions for conductivity of a superconducting film above and below critical temperature in an arbitrary electric field are derived in the frameworks of the time dependent Ginzburg-Landau theory. It is confirmed that slightly below critical temperature the differential conductivity of superconducting film can become negative for small enough values of electric field. This fact may cause generation of electromagnetic oscillations if the superconducting film is appropriately coupled of with a resonator. Their maximal frequency is proportional to the value of critical temperature of superconducting transition. The obtained results can stimulate the development of Terahertz generators on the basis of high temperature superconducting films.

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Keywords

Solid State and Materials 

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Copyright information

© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Todor M. Mishonov
    • 1
    Email author
  • Albert M. Varonov
    • 1
  • Ioulia Chikina
    • 2
  • Andrey A. Varlamov
    • 3
  1. 1.Department of Theoretical PhysicsFaculty of Physics, St. Clement of Ohrid University at SofiaSofiaBulgaria
  2. 2.LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA SaclayGif sur Yvette CedexFrance
  3. 3.CNR-SPINRomeItaly

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