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Origin of current phase relation in Josepshon junction.

  1. Mar 8, 2015 #1
    At the superconductor-superconductor point contact regime,
    two Andreev bound states carries supercurrent through the S-weak links-S interface.
    According to literature, current can be simply expressd
    Eq1) I_S=(1/Phi_0)*dE_A/d Phi
    here I_S : supercurrent, Phi_0 = flux quantum, E_A : Andreev bound state energy, Phi : Phase difference between two superconductor.
    Do you have any idea about the origin of this relation?
     
  2. jcsd
  3. Mar 9, 2015 #2

    DrDu

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    Science Advisor

    Maybe you could provide a reference?
     
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