Few-electron molecular states and their transitions in a single InAs quantum dot molecule
Mesoscale and Nanoscale Physics
2009-11-11 v1
Abstract
We study electronic configurations in a single pair of vertically coupled self-assembled InAs quantum dots, holding just a few electrons. By comparing the experimental data of non-linear single-electron transport spectra in a magnetic field with many-body calculations, we identify the spin and orbital configurations to confirm the formation of molecular states by filling both the quantum mechanically coupled symmetric and anti-symmetric states. Filling of the anti-symmetric states is less favored with increasing magnetic field, and this leads to various magnetic field induced transitions in the molecular states.
Keywords
Cite
@article{arxiv.cond-mat/0510213,
title = {Few-electron molecular states and their transitions in a single InAs quantum dot molecule},
author = {T. Ota and M. Rontani and S. Tarucha and Y. Nakata and H. Z. Song and T. Miyazawa and T. Usuki and M. Takatsu and N. Yokoyama},
journal= {arXiv preprint arXiv:cond-mat/0510213},
year = {2009}
}
Comments
14 pages, 3 figures, Accepted for publication in Phys. Rev. Lett