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Odd and even Kondo effects from emergent localization in quantum point contacts

Author

Listed:
  • M. J. Iqbal

    (Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands)

  • Roi Levy

    (Ben-Gurion University of the Negev, Beer Sheva 84105, Israel)

  • E. J. Koop

    (Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands)

  • J. B. Dekker

    (Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands)

  • J. P. de Jong

    (Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands)

  • J. H. M. van der Velde

    (Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands)

  • D. Reuter

    (Angewandte Festkörperphysik, Ruhr-Universität Bochum, D-44780 Bochum, Germany)

  • A. D. Wieck

    (Angewandte Festkörperphysik, Ruhr-Universität Bochum, D-44780 Bochum, Germany)

  • Ramón Aguado

    (Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Ines de la Cruz 3, 28049 Madrid, Spain)

  • Yigal Meir

    (Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
    Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel)

  • C. H. van der Wal

    (Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands)

Abstract

Electric conductance through a narrow constriction of width comparable to the electronic wavelength is quantized in units of 2e2/h, but a shoulder at around 0.7 of the conductance quantum is often present in measurements; detailed experiments now confirm that this effect is due to the emergence of localized states that result from many-body interactions between electrons in the constriction.

Suggested Citation

  • M. J. Iqbal & Roi Levy & E. J. Koop & J. B. Dekker & J. P. de Jong & J. H. M. van der Velde & D. Reuter & A. D. Wieck & Ramón Aguado & Yigal Meir & C. H. van der Wal, 2013. "Odd and even Kondo effects from emergent localization in quantum point contacts," Nature, Nature, vol. 501(7465), pages 79-83, September.
    • Handle: RePEc:nat:nature:v:501:y:2013:i:7465:d:10.1038_nature12491
    DOI: 10.1038/nature12491
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