@article{Siegl2023-10-18Elect-68047,
  year={2023},
  doi={10.1103/PhysRevB.108.144420},
  title={Electrical detectability of magnon-mediated spin current shot noise},
  number={14},
  volume={108},
  issn={2469-9950},
  journal={Physical Review B},
  author={Siegl, Luise and Lammel, Michaela and Kamra, Akashdeep and Hueble, Hans and Belzig, Wolfgang and Goennenwein, Sebastian T. B.},
  note={Article Number: 144420}
}

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    <dc:contributor>Belzig, Wolfgang</dc:contributor>
    <dc:contributor>Goennenwein, Sebastian T. B.</dc:contributor>
    <dc:creator>Hueble, Hans</dc:creator>
    <dc:language>eng</dc:language>
    <dc:contributor>Hueble, Hans</dc:contributor>
    <dc:creator>Siegl, Luise</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2023-11-06T13:45:09Z</dc:date>
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    <dc:contributor>Lammel, Michaela</dc:contributor>
    <dcterms:title>Electrical detectability of magnon-mediated spin current shot noise</dcterms:title>
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    <dc:contributor>Kamra, Akashdeep</dc:contributor>
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    <dc:contributor>Siegl, Luise</dc:contributor>
    <dc:creator>Goennenwein, Sebastian T. B.</dc:creator>
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    <dc:creator>Lammel, Michaela</dc:creator>
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    <dc:creator>Belzig, Wolfgang</dc:creator>
    <dcterms:issued>2023-10-18</dcterms:issued>
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    <dc:creator>Kamra, Akashdeep</dc:creator>
    <dcterms:abstract>A magnonic spin current crossing a ferromagnet-metal interface is accompanied by spin current shot noise arising from the discrete quanta of spin carried by magnons. In thin films, for example, the spin of so-called squeezed magnons has been shown to deviate from the common value ℏ, with corresponding changes in the spin noise. In experiments, spin currents are typically converted to charge currents via the inverse spin Hall effect. We here analyze the magnitude of the spin current shot noise in the charge channel for a typical electrically detected spin pumping experiment and find that the voltage noise originating from the spin current shot noise is much smaller than the inevitable Johnson-Nyquist noise. Furthermore, we find that due to the local nature of the spin-charge conversion, the ratio of spin current shot noise and Johnson-Nyquist noise cannot be systematically enhanced by tuning the sample geometry, in contrast to the linear increase in dc spin pumping voltage with sample length. Instead, the ratio depends sensitively on material-specific transport properties. Our analysis thus provides guidance for the experimental detection of squeezed magnons through spin pumping shot noise.</dcterms:abstract>
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