Dresden 2003 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 12: Mesoskopische Systeme II
TT 12.4: Vortrag
Mittwoch, 26. März 2003, 15:30–15:45, HSZ03
Shot noise in tunneling transport through molecules — •Axel Thielmann1, Matthias H. Hettler1, Jürgen König2, and Gerd Schön2 — 1Forschungszentrum Karlsruhe, Institut für Nanotechnologie, 76021 Karlsruhe, Germany — 2Institut für Theoretische Festkörperphysik , Universtität Karlsruhe, 76128 Karlsruhe, Germany
We consider electrical transport through a single molecule coupled to metal electrodes via tunneling barriers. Using the Anderson model as the simplest interacting model to approximate a molecule we extend the “orthodox” theory to compute the shot noise to arbitrary order in perturbation theory in the tunnel couplings. Specifically, we show that by a combined measurement of current and shot noise, it is possible to deduce deteailed information on the coupling strength of the molecule to the left and right electrode, even in lowest order perturbation theory.