Selection Rules for Transport Excitation Spectroscopy of Few-Electron Quantum Dots

1995/02/13 by Daniela Pfannkuche, Sergio E. Ulloa · 9 citations
Engineering · Physics and Astronomy · #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat

paper · pdf · doi:10.1103/physrevlett.74.1194

REVTEX manuscript with 3 Figures included in uu file. Published in Phys. Rev. Lett. 74, 1194--1197 (1995)

openalex publication_date 1995/02/13 · arxiv created 1995/10/17 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Tunneling of electrons traversing a few-electron quantum dot is strongly influenced by the Coulomb interaction leading to Coulomb blockade effects and single-electron tunneling. We present calculations which demonstrate that correlations between the electrons cause a strong suppression of most of the energetically allowed tunneling processes involving excited dot states. The excitation of center-of-mass modes, in contrast, is unaffected by the Coulomb interaction. Therefore, channels connected to these modes dominate the excitation spectra in transport measurements.

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