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Relativistic theory of transport in a\ud normal/superconducting microconstriction

By Catherine Aerts and Paul Strange


In this paper we develop a relativistic model of a normal–superconductor junction based on the generalized semiconductor model together with the Dirac–Bogoliubov–de Gennes equations to describe the reflection and transmission of particles at an N–S boundary with a barrier potential. The theory is illustrated with a calculation of the I–V curves, the differential conductance and the excess current. As expected, we observe that relativistic effects are very small in\ud superconducting junctions, but their effect is to increase the effective strength of the barrier

Topics: QC
Publisher: IOP Publishing Ltd
Year: 2008
OAI identifier:

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