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Universality of the Kondo Effect in Quantum Dots with Ferromagnetic Leads

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Gaaß, Markus ; Hüttel, Andreas K. ; Kang, Kicheon ; Weymann, Ireneusz ; Delft, Jan van ; Strunk, Christoph
Date of publication of this fulltext: 25 Oct 2011 10:45


We investigate quantum dots in clean single-wall carbon nanotubes with ferromagnetic PdNi-leads in the Kondo regime. Most of the Kondo resonances exhibit a splitting, which depends on the tunnel coupling to the leads and an external magnetic field B, but only weakly on the gate voltage. Using numerical renormalization group calculations, we demonstrate that all salient features of the data can be ...


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