Tunable Kondo-Luttinger systems far from equilibrium

Details Tunable Kondo-Luttinger systems far from equilibrium Tunable Kondo-Luttinger systems far from equilibrium

2010-02-09

arxiv.org/abs/1002.1757v1

Phys. Rev. B, 82, 115325 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

We theoretically investigate the non-equilibrium current through a quantum dot coupled to one- dimensional electron leads, utilizing a controlled frequency-dependent renormalization group (RG) approach. We compute the non-equilibrium conductance for large bias voltages and address the interplay between decoherence, Kondo entanglement and Luttinger physics. The combined effect of large bias voltage and strong interactions in the leads, known to stabilize two-channel Kondo physics, leads to non-trivial modifications of the conductance. For weak interactions, we build an analogy to a dot coupled to helical edge states of two-dimensional topological insulators.

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