Optical near-field mapping of excitons and biexcitons in naturally occurring semiconductor quantum dots

Details Optical near-field mapping of excitons and biexcitons in naturally occurring semiconductor quantum dots Optical near-field mapping of excitons and biexcitons in naturally occurring semiconductor quantum dots

2004-03-19

arxiv.org/abs/cond-mat/0403498v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1063/1.1741033

We calculate the near-field optical spectra of excitons and biexcitons in semiconductor quantum dots naturally occurring at interface fluctuations in GaAs-based quantum wells, using a non-local description of the response function to a spatially modulated electro-magnetic field. The relative intensity of the lowest, far-field forbidden excitonic states is predicted; the spatial extension of the ground biexciton state is found in agreement with recently published experiments.

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