Andreev reflection and tunneling spectrum in metal-superconductor-metal junctions

Details Andreev reflection and tunneling spectrum in metal-superconductor-metal junctions Andreev reflection and tunneling spectrum in metal-superconductor-metal junctions

2011-09-13

arxiv.org/abs/1109.2760v1

Physics

Condensed Matter

Superconductivity

Scientific paper

The tunneling spectrum of an electron and a hole in metal-superconductor-metal junctions is computed using the Blonder-Tinkham-Klapwijk theory. The incident and the outgoing currents finally balance each other by an interface charge inside the superconductor and metal junction. The present computation shows a more abundant structure compared to that on a metal-superconductor junction, such as the resonance at bias voltages above the energy gap of the superconductor. The density of the interface charge shows a quantum-like oscillation.

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