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Zero-bias anomalies and boson-assisted transport through small quantum dots

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Advances in Solid State Physics 35

Part of the book series: Advances in Solid State Physics ((ASSP,volume 35))

Abstract

We study resonant tunneling through a quantum dot with one degenerate state in the presence of a strong Coulomb repulsion and a bosonic environment. Using a real-time approach we calculate the spectral density and the nonlinear current within a conserving approximation. The spectral density shows a multiplet of Kondo peaks if the temperature and boson frequency are smaller than the intrinsic broadening of the dot state. As a consequence we find a zero-bias anomaly in the differential conductance which can show local maxima or minima dependent on the value of the gate voltage. The results are compared with recent experiments.

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Authors and Affiliations

  1. Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128, Karlsruhe, Germany

    Jürgen König, Herbert Schoeller & Gerd Schön

  2. Department of Physics, Simon Fraser University, V5A 1S6, Burnaby, B.C., Canada

    Herbert Schoeller

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  1. Jürgen König
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  2. Herbert Schoeller
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  3. Gerd Schön
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Reinhard Helbig

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© 1996 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH

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König, J., Schoeller, H., Schön, G. (1996). Zero-bias anomalies and boson-assisted transport through small quantum dots. In: Helbig, R. (eds) Advances in Solid State Physics 35. Advances in Solid State Physics, vol 35. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0107547

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  • DOI: https://doi.org/10.1007/BFb0107547

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  • Print ISBN: 978-3-528-08043-3

  • Online ISBN: 978-3-540-75334-6

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