The influence of proximity effects on zero bias conductance (sigma{V = 0}) is investigated in junctions of the type superconductor/normal metal-constriction-normal metal (S-1/N-1-c-N-2). Such a study is undertaken in some approximations also in the presence of the magnetic field. Zero bias anomalies (ZBA) are determined by the weak coupling nature of the S-1/N-1 interface. Furthermore, the high transmittance of the N-1-c-N-2 interface seems to play a fundamental role in determining the weak dependence of zero bias conductance on the magnetic field, observed experimentally in high transmittance microjunctions.
PROXIMITY HIGH TRANSMITTANCE MICROJUNCTIONS IN PRESENCE OF A MAGNETIC FIELD
TAFURI, Francesco;
1996
Abstract
The influence of proximity effects on zero bias conductance (sigma{V = 0}) is investigated in junctions of the type superconductor/normal metal-constriction-normal metal (S-1/N-1-c-N-2). Such a study is undertaken in some approximations also in the presence of the magnetic field. Zero bias anomalies (ZBA) are determined by the weak coupling nature of the S-1/N-1 interface. Furthermore, the high transmittance of the N-1-c-N-2 interface seems to play a fundamental role in determining the weak dependence of zero bias conductance on the magnetic field, observed experimentally in high transmittance microjunctions.File in questo prodotto:
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