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

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

2005-12-12

arxiv.org/abs/cond-mat/0512239v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.74.033306

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.

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