Mesoscopic Transport in Tunable Andreev Interferometers
P. G. N. de Vegvar, T. A. Fulton, W. H. Mallison, R. E. Miller
DOI 10.1103/PhysRevLett.73.1416 · Physical Review Letters
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Abstract
Low temperature transport measurements have been performed on nanofabricated Au wires a few μm long contacting two Nb electrodes whose superconducting phase difference Δθ was externally controlled. Δθ was generated by passing a known supercurrent through a series array of 28 Nb−AlOx−Nb Josephson junctions. The conductance of the Au wire displays a component in Δθ with period 2π. These conductance oscillations arise from the change in scattering boundary conditions of quasiparticles in the Au wire at the Au-Nb interfaces due to Andreev reflection.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.1 | Pressure not reported | unknown |
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