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 ν≤1. We measure excitation spectra and find ground state transitions beyond the maximum density droplet (ν=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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2006|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics