Publication

Experimental S-2DEG-S junction characteristics and a novel interpretation

Jean-François Carlin
1996
Journal Articles

Abstract

We present experimental transport characteristics of long and ballistic superconductor - 2-dimensional electron gas - superconductor junctions obtained in a temperature range from 1K down to 10mK. Surprisingly the critical current I-c can be fitted to the ideal junction temperature dependence, I-c(T) proportional to exp(-T/T-0) approximate to exp(-L/xi(T)), with xi(T) the thermal coherence length, despite the presence of interface barriers and a to small I-c. We propose that the conflict between the experimental data and the theoretical predictions for these non ideal junctions might be resolved by employing concepts from the theory of disorder induced opening of tunnel channels.

Official source

https://infoscience.epfl.ch/entities/publication/78d11bd0-afd5-44df-bb28-1f04cc9636a4

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Jean-François Carlin
1996
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/78d11bd0-afd5-44df-bb28-1f04cc9636a4

About this result

Related concepts (32)

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A p–n junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor. The "p" (positive) side contains an excess of holes, while the "n" (negative) side contains an excess of electrons in the outer shells of the electrically neutral atoms there. This allows electric current to pass through the junction only in one direction.

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