Intermediate Low Spin States in a Few-electron Quantum Dot in the 1 Regime
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 1. We measure excitation spectra and find ground state transitions beyond the maximum density droplet (=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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