Reentrant behavior in the superconducting phase-dependent resistance of a disordered two-dimensional electron gas
S. G. den Hartog, B. J. van Wees, T. M. Klapwijk, Yu. V. Nazarov, G. Borghs
DOI 10.1103/PhysRevB.56.13738 · Physical Review B
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Abstract
We have investigated the bias-voltage dependence of the phase-dependent differential resistance of a disordered T-shaped two-dimensional electron gas coupled to two superconducting terminals. The resistance oscillations first increase upon lowering the energy. For bias voltages below the Thouless energy, the resistance oscillations are suppressed and disappear almost completely at zero bias voltage. We find a qualitative agreement with the calculated reentrant behavior of the resistance and discuss quantitative deviations.
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. | — | Pressure not reported | unknown |
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