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In a square-well quantum dot under a magnetic field, the parity of the ground state of three interacting electrons oscillates along with certain spin transitions as the magnetic field becomes stronger. This oscillation, due to the strong correlation between electrons, suggests that the response of the ground state oscillates as the filling factor of Landau levels changes, as in the fractional quantum...
We determined the far-infrared absorption spectra of a square-well quantum dot in which three electrons are confined by a heterostructure composed of GaAs AlGaAs. There are many types of optical transitions, some induced by electron-electron interaction, although there are no many-body effects on far-infrared absorption spectra in a quantum dot with parabolic confinement. As the size of the square-well...
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