2002/09/23 by G. Kiesslich, A. Wacker, E. Schoell +3
Physics and Astronomy · #cond-mat
published as phys. status solidi (c) 0, 1293 (2003) · 4 pages, 2 figures
arxiv created 2002/09/23 · arxiv updated 2009/11/30
The shot noise suppression in a sample containing a layer of self-assembled InAs quantum dots has been investigated experimentally and theoretically. The observation of a non-monotonic dependence of the Fano factor on the bias voltage in a regime where only few quantum dot ground states contribute to the tunneling current is analyzed by a master equation model. Under the assumption of tunneling through states without Coulomb interaction this behaviour can be qualitatively reproduced by an analytical expression.