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Berlin 2005 – scientific programme

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DY: Dynamik und Statistische Physik

DY 34: Poster

DY 34.115: Poster

Monday, March 7, 2005, 15:30–18:00, Poster TU D

Transport through double barriers in Luttinger liquids — •Tilman Enss1, Sabine Andergassen1, Volker Meden2, Xavier Barnabé-Thériault2, Walter Metzner1, and Kurt Schönhammer21Max-Planck-Institut für Festkörperforschung, Stuttgart — 2Institut für Theoretische Physik, Universität Göttingen

We study the conductance through an interacting nanowire containing impurities and coupled to non-interacting leads. Our functional RG method starts from the microscopical model and arrives at an effective low-energy model showing Luttinger-liquid behavior. For a double barrier enclosing a dot region, the conductance is determined over several decades of the temperature and for arbitrary impurity strength. Depending on the parameters of the dot we find temperature regimes in which the conductance follows power laws with universal exponents as well as non-universal behavior.

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