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Excited-State Magnetoluminescence of InAs/GaAs Self-Assembled Quantum Dots

AuthorsPaskov, P. P.; Holtz, P. O.; Monemar, B.; García Martínez, Jorge Manuel CSIC ORCID CVN ; Schoenfeld, W. V.; Petroff, Pierre M.
KeywordsQuantum dots
Effective masses
Issue Date2001
PublisherJapanese Society of Applied Physics
CitationJapanese Journal of Applied Physics 40(3B): 1998-2001 (2001)
AbstractThe magnetoluminescence of InAs/GaAs self-assembled quantum dots (QDs) is studied. Using different excitation intensities, the dots are filled with up to 11–12 electron-hole pairs and the magnetic field evolution of the excited-state emissions is revealed. The magnetoluminescence spectra resemble very well the spectra of uncorrelated electro-hole pairs. A splitting of the states with a nonzero angular momentum quantum number is observed and the in-plane reduced electron-hole mass is determined. The experimental value is found to be in a good agreement with the theoretical predictions based on the eight-band k ·p model including both strain effect and band nonparabolicity.
Description4 páginas, 3 figuras.
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