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TT: Fachverband Tiefe Temperaturen
TT 32: Correlated Electrons: Poster Session
TT 32.49: Poster
Thursday, February 28, 2008, 14:00–18:00, Poster B
Approaching experimental setups: 1D quantum wire coupled to 2D leads — •Peter Wächter1, Volker Meden2, and Kurt Schönhammer1 — 1Institut für Theoretische Physik, Universität Göttingen, Germany — 2Institut für Theoretische Physik A, RWTH Aachen, Germany
A major experimental challenge in low-dimensional physics is the clear confirmation of Luttinger-Liquid(LL)-behavior in one-dimensional correlated electron systems. A prominent characteristic property of LL-physics is the scaling of a variety of observables as functions of external parameters with exponents controlled by a single parameter, the LL-parameter K. In this work we focus on the scaling of the conductance G as function of the temperature. In particular, we extend the investigation of the LL scaling of G from the mostly considered case of 1d leads connected to the end of a 1d quantum wire to 2d leads coupled arbitrarily to a 1d quantum wire, a geometry often used in experiments. We present numerical results for a variety of configurations and discuss the underlying physical mechanisms.