Correlations between Ground and Excited State Spectra of a Quantum Dot
Abstract
We have studied the ground and excited state spectra of a semiconductor quantum dot for successive numbers of electron occupancy using linear and nonlinear magnetoconductance measurements. We present the first observation of direct correlation between the mth excited state of the N electron system and the ground state of the N+m electron system for m up to 4. Results are consistent with a non-spin-degenerate single particle picture of the filling of levels. Electron-electron interaction effects are also observed as a perturbation to this model. Magnetoconductance fluctuations of ground states are shown as anticrossings where wavefunction characteristics are exchanged between adjacent levels.
Keywords
Cite
@article{arxiv.cond-mat/9709126,
title = {Correlations between Ground and Excited State Spectra of a Quantum Dot},
author = {D. R. Stewart and D. Sprinzak and C. M. Marcus and C. I. Duruoz and J. S. Harris},
journal= {arXiv preprint arXiv:cond-mat/9709126},
year = {2009}
}
Comments
8 pages pdf; gzipped ps available at http://www-leland.stanford.edu/group/MarcusLab/grouppubs.html