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Coulomb-interaction induced crossover from confined to bulk quantum-dot states in a magnetic field

Ulrichs, E. ; Steinebach, C. ; Schüller, Christian ; Heyn, Christian ; Heitmann, Detlef


We have employed inelastic light scattering to investigate electronic excitations of quantum dots in a magnetic field. For small magnetic fields the dispersion of the single-particle excitations (SPEs) follows the Fock–Darwin behavior. But already at moderate fields of Bgreater-or-equal, slanted0.6 T the SPEs deviate from that dispersion and follow directly the cyclotron resonance. This finding ...


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