Even-odd flux quanta effect in the Fraunhofer oscillations of an edge-channel Josephson junction

B. Baxevanis, V. P. Ostroukh, C. W. J. Beenakker

We calculate the beating of $h/2e$ and $h/e$ periodic oscillations of the flux-dependent critical supercurrent $I_c(\Phi )$ through a quantum spin-Hall insulator between two supercondu…