Intermediate Low Spin States in a Few-electron Quantum Dot in the $\nu\le 1$ Regime

Y. Nishi; P. A. Maksym; D. G. Austing; T. Hatano; L. P. Kouwenhoven; H. Aoki; S. Tarucha

doi:10.1103/PhysRevB.74.033306

Intermediate Low Spin States in a Few-electron Quantum Dot in the $\nu\le 1$ Regime

Mesoscale and Nanoscale Physics 2009-11-11 v1

Authors: Y. Nishi , P. A. Maksym , D. G. Austing , T. Hatano , L. P. Kouwenhoven , H. Aoki , S. Tarucha

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We study the effects of electron-electron interactions in a circular few-electron vertical quantum dot in such a strong magnetic field that the filling factor $\nu\le 1$ . We measure excitation spectra and find ground state transitions beyond the maximum density droplet ( $\nu=1$ ) region. We compare the observed spectra with those calculated by exact diagonalization to identify the ground state quantum numbers, and find that intermediate low-spin states occur between adjacent spin-polarized magic number states.

Keywords

quantum dot electron-electron interactions filling factor excitation spectra exact diagonalization spin-polarized states

Cite

@article{arxiv.cond-mat/0512239,
  title  = {Intermediate Low Spin States in a Few-electron Quantum Dot in the $\nu\le 1$ Regime},
  author = {Y. Nishi and P. A. Maksym and D. G. Austing and T. Hatano and L. P. Kouwenhoven and H. Aoki and S. Tarucha},
  journal= {arXiv preprint arXiv:cond-mat/0512239},
  year   = {2009}
}

Comments

4 pages, 4 figures

Intermediate Low Spin States in a Few-electron Quantum Dot in the $\nu\le 1$ Regime

Abstract

Keywords

Cite

Comments

Related papers