Supercurrent and noise in point contact between two different superconductors

Details Supercurrent and noise in point contact between two different superconductors Supercurrent and noise in point contact between two different superconductors

2003-05-08

arxiv.org/abs/cond-mat/0305160v1

Physics

Condensed Matter

Superconductivity

to appear in PRB

Scientific paper

10.1103/PhysRevB.68.024511

We show that, for a quantum point contact between two superconductors of
different gap magnitudes, Andreev bound states do not exist for certain phase
differences and gap ratios. Continuum states may dominate the transport, and
the supercurrent noise is qualitatively different from the case of equal gaps.

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