Josephson phase

Josephson phase

In superconductivity, the Josephson phase is the difference of the phases of the quantum mechanical wave function in two superconducting electrodes forming a Josephson junction.

For example, if the macroscopic wave functions Psi_1 and Psi_2 in superconductors 1 and 2 are given by

Psi_1 = sqrt{n_s} e^{i heta_1}Psi_2 = sqrt{n_s} e^{i heta_2}

then the Josephson phase is phi stackrel{mathrm{def{=} heta_2- heta_1.


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