Dresden 2009 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 2: Transport: Nanoelectronics I - Quantum Dots and Wires, Point Contacts 1
TT 2.3: Vortrag
Montag, 23. März 2009, 10:45–11:00, HSZ 301
Non-equilibrium transport through coupled quantum dot–metallic island systems — •Marco G. Pala1, Michele Governale2, and Jürgen König2 — 1IMEP-LAHC, INP MINATEC, Centre National de la Recherche Scientifique, 38016 Grenoble, France — 2Theoretische Physik, Universität Duisburg-Essen, 47048 Duisburg, Germany
We study transport through a system composed of a single-level quantum dot tunnel-coupled to a metallic island. Such a system is of interest since it can be used to model transport trough a large island in series with charge trap centers [1]. A real-time diagrammatic technique [2,3], capable of accounting for non-equilibrium, Coulomb interaction and high-order tunneling processes, is employed to investigate transport in the resonant tunneling regime under the influence of a finite interaction strength between the dot and the island.
[1] M. Hofheinz et al., Eur. Phys. J. B 54, 299 (2006).
[2] J. König, H. Schoeller, and G. Schön, Phys. Rev. Lett. 76, 1715 (1996).
[3] H. Schoeller and G. Schön, Phys. Rev. B 50, 18436 (1994).