| A single-electron transistor (SET) consisting of a small conducting island contacted by macroscopic conductors can be used as a tunable platform for studying many-body phenomena. One of these is the nonequilibrium Kondo effect, which provides insight into the delicate interplay between quantum coherence and dissipation in a strongly interacting system. This talk will briefly review the basics of the Kondo physics in SETs and then describe recent measurements in which an externally imposed energy scale is competing with the Kondo correlations. Two experiments will be discussed. First, transport data obtained in presence of the magnetic field will be presented. With these measurements, we investigate the universality of nonequilibrium transport with respect to the Kondo temperature and the magnetic field. Second, non-adiabatic transport effects observed under simultaneous application of the magnetic field and a high-frequency modulation of the SET potential will be discussed. |
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