Excitation spectra of circular, few-electron quantum dots |
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| Authors: | LP Kouwenhoven TH Oosterkamp MWS Danoesastro M Eto DG Austing T Honda S Tarucha |
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| Institution: | L. P. Kouwenhoven, T. H. Oosterkamp, M. W. S. Danoesastro, Department of Applied Physics and Delft Institute of MicroElectronics and Submicrontechnology, Delft University of Technology, Post Office Box 5046, 2600 GA Delf. |
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| Abstract: | Studies of the ground and excited states in semiconductor quantum dots containing 1 to 12 electrons showed that the quantum numbers of the states in the excitation spectra can be identified and compared with exact calculations. A magnetic field induces transitions between the ground and excited states. These transitions were analyzed in terms of crossings between single-particle states, singlet-triplet transitions, spin polarization, and Hund's rule. These impurity-free quantum dots allow "atomic physics" experiments to be performed in magnetic field regimes not accessible for atoms. |
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