reentrance effect in normal-metal/superconducting hybrid loops

Abstract

We have measured the transport properties of two mesoscopic hybrid loops composed of a normal-metal arm and a superconducting arm. The samples differed in the transmittance of the normal/superconducting interfaces. While the low transmittance sample showed monotonic behavior in the low temperature resistance, magnetoresistance and differential resistance, the high transmittance sample showed reentrant behavior in all three measurements. This reentrant behavior is due to coherent Andreev reflection at the normal/superconducting interfaces. We compare the reentrance effect for the three different measurements and discuss the results based on the theory of quasiclassical Green's functions.

References in corpus (3)

• Long-Range Coherence in a Mesoscopic Metal near a Superconducting Interface
• Phase Dependent Thermopower in Andreev Interferometers
• Reentrant behavior in the superconducting phase-dependent resistance of a disordered 2-dimensional electron gas

Cited by in corpus (6)

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• Transport and triplet superconducting condensate in mesoscopic ferromagnet-superconductor structures