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Conductance and current noise of a superconductor/ferromagnet quantum point contact

Conductance and current noise of a superconductor/ferromagnet quantum point contact

We study the conductance and current noise of a superconductor/ferromagnet $(S/F)$ single-channel quantum point contact (QPC) as a function of the QPC bias voltage using a scattering approach. We show that the spin dependence of interfacial phase shifts (SDIPS) acquired by electrons upon scattering by the QPC can strongly modify …