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

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 and C. H. van der Wal ()
Additional contact information
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
C. H. van der Wal: Zernike Institute for Advanced Materials, University of Groningen, NL-9747AG Groningen, The Netherlands

Nature, 2013, vol. 501, issue 7465, 79-83

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.

Date: 2013
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DOI: 10.1038/nature12491

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