@article{Senkpiel2020-04-16Dynam-49230,
  year={2020},
  doi={10.1103/PhysRevLett.124.156803},
  title={Dynamical Coulomb Blockade as a Local Probe for Quantum Transport},
  number={15},
  volume={124},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Senkpiel, Jacob and Klöckner, Jan C. and Etzkorn, Markus and Dambach, Simon and Kubala, Björn and Belzig, Wolfgang and Cuevas, Juan Carlos and Pauly, Fabian and Ast, Christian R. and Kern, Klaus},
  note={Article Number: 156803}
}

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    <dc:contributor>Etzkorn, Markus</dc:contributor>
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    <dc:contributor>Ast, Christian R.</dc:contributor>
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    <dc:creator>Belzig, Wolfgang</dc:creator>
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    <dcterms:title>Dynamical Coulomb Blockade as a Local Probe for Quantum Transport</dcterms:title>
    <dc:creator>Senkpiel, Jacob</dc:creator>
    <dcterms:abstract xml:lang="eng">Quantum fluctuations are imprinted with valuable information about transport processes. Experimental access to this information is possible, but challenging. We introduce the dynamical Coulomb blockade (DCB) as a local probe for fluctuations in a scanning tunneling microscope (STM) and show that it provides information about the conduction channels. In agreement with theoretical predictions, we find that the DCB disappears in a single-channel junction with increasing transmission following the Fano factor, analogous to what happens with shot noise. Furthermore we demonstrate local differences in the DCB expected from changes in the conduction channel configuration. Our experimental results are complemented by ab initio transport calculations that elucidate the microscopic nature of the conduction channels in our atomic-scale contacts. We conclude that probing the DCB by STM provides a technique complementary to shot noise measurements for locally resolving quantum transport characteristics.</dcterms:abstract>
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    <dc:creator>Cuevas, Juan Carlos</dc:creator>
    <dcterms:issued>2020-04-16</dcterms:issued>
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