Dresden 2009 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 6: Postersession Correlated Electrons: (General) Theory, Low-Dimensional Systems, Kondo Physics, Heavy Fermions, Quantum-Critical Phenomena
TT 6.36: Poster
Montag, 23. März 2009, 13:00–16:45, P1A
Quantum dots coupled to Luttinger liquid leads - conductance and charging — •Peter Wächter1, Volker Meden2, and Kurt Schönhammer1 — 1Institut für Theoretische Physik, Universität Göttingen, D-37077 Göttingen — 2Institut für Theoretische Physik A, RWTH Aachen, D-52056 Aachen
The theoretical description and experimental realization of quantum dots is a very active field in condensed matter physics. In our work, we model quantum dots as non-degenerate energy levels coupled to Luttinger liquid leads, i.e. we couple the zero-dimensional dot to leads of dimension one in order to study how the Luttinger liquid physics in the leads affects the physics of the dot. In particular we identify universal power law scaling in the charging of a single quantum dot and comment on the conductance through such a system. Furthermore we explore the conductance through parallel quantum dots coupled to Luttinger liquid leads.