Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-08-02
Journal of Applied Physics 101, 081714 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
RevTeX 4.0, 5 pages, 3 B/W figures, 1 table. This paper is based on an invited talk presented by the authors at the 28th Inter
Scientific paper
10.1063/1.2722782
We show both theoretically and experimentally that scanning tunneling spectroscopy (STS) images of semiconductor quantum dots may display clear signatures of electron-electron correlation. We apply many-body tunneling theory to a realistic model which fully takes into account correlation effects and dot anisotropy. Comparing measured STS images of freestanding InAs quantum dots with those calculated by the full configuration interaction method, we explain the wave function sequence in terms of images of one- and two-electron states. The STS map corresponding to double charging is significantly distorted by electron correlation with respect to the non-interacting case.
Hansen Wolfgang
Heyn Christian
Janson Martin
Maruccio Giuseppe
Matsui Tomohiro
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