Coherent diffusive transport mediated by Andreev reflections at V=Δ/e in a mesoscopic superconductor/semiconductor/superconductor junction
J. Kutchinsky, R. Taboryski, O. Kuhn, C. B. Sørensen, P. E. Lindelof, A. Kristensen, J. Bindslev Hansen, C. Schelde Jacobsen, J. L. Skov
DOI 10.1103/PhysRevB.56.R2932 · Physical Review B
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Abstract
We present experiments revealing a singularity in the coherent current across a superconductor/semiconductor/superconductor (SSmS) junction at the bias voltage corresponding to the superconducting energy gap V=Δ/e. The SSmS structure consists of highly doped GaAs with superconducting electrodes of aluminum configured as an interferometer. The phase-coherent component of the current is probed as the amplitude of h/2e vs magnetic-field oscillations in the differential resistance of the interferometer.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.2 | Pressure not reported | unknown |
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