Phys. Rev. Lett. 80, 2673–2676 (1998)Quasiatomic Fine Structure and Selection Rules in Quantum DotsReceived 8 August 1997; published in the issue dated 23 March 1998 We probe the electronic shell structure of quasiatomic systems, realized in GaAs-AlGaAs quantum dots, by resonant Raman spectroscopy. We observe a series of discrete spin-density excitations, whose energies are very close to single-particle level spacings in a quantum dot. The combined information from experiments at different wave vectors in the lateral direction and from investigations with applied magnetic fields reveals a distinct set of Raman allowed transitions (Δn,Δm), where changes Δn and Δm are changes in radial and angular momentum quantum numbers, respectively. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.80.2673
DOI:
10.1103/PhysRevLett.80.2673
PACS:
73.20.Dx, 71.45.Gm, 73.20.Mf, 78.55.Cr
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