Kondo Effect in a Many-Electron Quantum Ring

DOI to cite this document:: 10.5283/epub.11826

Fuhrer, A. ; Ihn, Thomas ; Ensslin, Klaus ; Wegscheider, Werner ; Bichler, Max

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Date of publication of this fulltext: 11 Jan 2010 13:22

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Abstract

The Kondo effect is investigated in a many-electron quantum ring as a function of the magnetic field. For fields applied perpendicular to the plane of the ring a modulation of the Kondo effect with the Aharonov-Bohm period is observed. This effect is discussed in terms of the energy spectrum of the ring and the parametrically changing tunnel coupling. In addition, we use gate voltages to modify ...