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Real‐space mapping of exciton wave function in a GaAs quantum dot by near‐field optical imaging spectroscopy
Author(s) -
Matsuda Kazunari,
Saiki Toshiharu,
Nomura Shintaro,
Mihara Masaru,
Aoyagi Yoshinobu
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200303039
Subject(s) - quantum dot , exciton , spectroscopy , imaging spectroscopy , wave function , physics , photoluminescence , biexciton , field (mathematics) , condensed matter physics , atomic physics , optics , optoelectronics , quantum mechanics , mathematics , pure mathematics
We describe near‐field photoluminescence imaging spectroscopy of a single naturally occurring GaAs quantum dot in a narrow quantum well. A spatial mapping of the center‐of‐mass wave function of the exciton state in the quantum dot is demonstrated due to the realization of a high spatial resolution (30 nm) of imaging spectroscopy and the selection of a large quantum dot (100 nm). We observe an elongation along the [110] crystal axis of the wave function in the exciton state.
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