Kondo effect in a Quantum Dot at finite bias voltage

•Thomas Korb1, Markus Keil2, Jürgen König3 und Herbert Schoeller1
1Forschungszentrum Karlsruhe, Institut für Nanotechnologie
2Institut für Theoretische Physik, Universität Göttingen
3Department of Physics, The University of Texas at Austin

Quantum dot systems represent a fascinating model system for many physical phenomena. The advantage of these systems is the possibility to tune the parameters within a wide range. Recent experiments show that quantum dots can even serve as a model system for experimental studies of the Kondo effect [1]. These experiments stimulated theoretical interests on non-equilibrium effects e.g. the interplay of the two energy scales given by the Kondo temperature and bias voltage. We apply the real time renormalization group method [2] to this problem to find predictions in a systematic way