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      Incorporation of Sb in InAs/GaAs quantum dots  [Article]

      Molina, Sergio I.; Sánchez, A. M.; Beltrán, A.M.; Sales, David L.; Ben, Teresa; Chisholm, M. F.; Varela, María; Pennycook, Stephen J.; Galindo, P. L.; Papworth, A. J.; Goodhew, P. J.; Ripalda, José María (American Institute of Physics, 2007)
      The formation of a quaternary InGaAsSb alloy is shown to occur in the core of epitaxial GaSb capped InAs/GaAs quantum dots emitting at 1.3 m. The existence of the four constituent elements is demonstrated by using spatially ...