Reentrant behavior in the superconducting phase-dependent resistance of a disordered 2-dimensional electron gas
S. G. den Hartog, B. J. van Wees, Yu. V. Nazarov, T. M. Klapwijk, G. Borghs
Abstract
We have investigated the bias-voltage dependence of the phase-dependent differential resistance of a disordered T-shaped 2-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.
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