Finite frequency noise of a superconductor/ferromagnet quantum point contact

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dc.creatorCottet, Audrey
dc.creatorDoucot, Benoit
dc.creatorBelzig, Wolfgang
dc.date2008-03-06
dc.date2008-11-27
dc.date.accessioned2026-07-07T12:44:31Z
dc.date.available2026-07-07T12:44:31Z
dc.descriptionWe have calculated the finite-frequency current noise of a superconductor-ferromagnet quantum point contact (SF QPC). This signal is qualitatively affected by the spin-dependence of interfacial phase shifts (SDIPS) acquired by electrons upon reflection on the QPC. For a weakly transparent QPC, noise steps appear at frequencies or voltages determined directly by the SDIPS. These steps can occur at experimentally accessible temperatures and frequencies. Finite frequency noise is thus a promising tool to characterize the scattering properties of a SF QPC.
dc.description5 pages, 3 figures, revised version, to appear in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/0803.0854
dc.identifierhttp://arxiv.org/abs/0803.0854
dc.identifierPhys. Rev. Lett. 101, 257001 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.257001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220797
dc.subjectMesoscale and Nanoscale Physics
dc.subjectSuperconductivity
dc.titleFinite frequency noise of a superconductor/ferromagnet quantum point contact
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