Media type: E-Article; Text Title: Tunneling resonances in quantum dots: Coulomb interaction modifies the width Contributor: Könemann, Jens [Author]; Kubala, Björn [Author]; König, Jürgen [Author]; Haug, Rolf J. [Author] imprint: College Park, MD : American Physical Society, 2006 Published in: Physical Review B 73 (2006), Nr. 3 Issue: published Version Language: English DOI: https://doi.org/10.15488/2855; https://doi.org/10.1103/PhysRevB.73.033313 Keywords: quantum dots ; single-electron tunneling ; Coulomb interaction Origination: Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Description: Single-electron tunneling through a zero-dimensional state in an asymmetric double-barrier resonant-tunneling structure is studied. The broadening of steps in the I-V characteristics is found to strongly depend on the polarity of the applied bias voltage. Based on a qualitative picture for the finite-lifetime broadening of the quantum dot states and a quantitative comparison of the experimental data with a nonequilibrium transport theory, we identify this polarity dependence as a clear signature of Coulomb interaction. © 2006 The American Physical Society. Access State: Open Access