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Transitions between À and 0 states in superconductor-ferromagnet-superconductor junctions

  • N. M. Chtchelkatchev
Condensed Matter

Abstract

Experimental and theoretical study of superconductor-ferromagnet-superconductor junctions (SFS junctions) showed that, in a certain range of parameters (e.g., the length of the ferromagnet dF, the exchange field Eex), the ground state of the SFS junction corresponds to a superconducting phase difference π or 0. The phase diagram of an SFS junction with respect to π and 0 states is investigated in this letter in Eex, dF, T space. It is shown that the phase diagram is very sensitive to the geometry of the system, in particular, to the amount of disorder in the junction.

PACS numbers

74.50.+r 74.80.−g 75.70.−i 

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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • N. M. Chtchelkatchev
    • 1
    • 2
  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesMoscowRussia
  2. 2.Institute for High-Pressure PhysicsRussian Academy of SciencesTroitsk, Moscow regionRussia

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