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

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

1995-10-17

arxiv.org/abs/cond-mat/9510092v1

Physics

Condensed Matter

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

Scientific paper

10.1103/PhysRevLett.74.1194

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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