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Josephson Inductance as a Probe for Highly Ballistic Semiconductor Superconductor Weak Links

Baumgartner, Christian ; Fuchs, Lorenz ; Frész, Linus ; Reinhardt, Simon ; Gronin, Sergei ; Gardner, Geoffrey ; Manfra, Michael ; Paradiso, Nicola ; Strunk, Christoph


We present simultaneous measurements of Josephson inductance and dc transport characteristics of ballistic Josephson junctions based upon an epitaxial Al-InAs heterostructure. The Josephson inductance at finite current bias directly reveals the current-phase relation. The proximity-induced gap, the critical current and the average value of the transparency τ are extracted without need for phase ...


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