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Growth and Optical Properties of Mn‐Containing II–VI Quantum Dots
Author(s) -
Maćkowski S.,
Lee S.,
Furdyna J.K.,
Dobrowolska M.,
Prechtl G.,
Heiss W.,
Kossut J.,
Karczewski G.
Publication year - 2002
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 - 10.1002/1521-3951(200201)229:1<469::aid-pssb469>3.0.co;2-x
Subject(s) - quantum dot , exciton , biexciton , magnetic field , condensed matter physics , spectroscopy , physics , magnetic semiconductor , photoluminescence , electro absorption modulator , quantum dot laser , semiconductor , chemistry , atomic physics , quantum mechanics , optoelectronics , ferromagnetism , semiconductor laser theory
Magnetic‐ion‐containing self‐assembled quantum dots based on II–VI semiconductors are investigated by time‐resolved optical spectroscopy. It is found that the dynamical properties of excitons confined in quantum dots depend on the relative position of intra‐Mn transition with respect to the quantum‐dot‐related emission. When the intra‐Mn transition energy is smaller than the dot emission energy, then the decay time of excitons in quantum dots increases with increasing magnetic field. When the intra‐Mn transition energy is larger, no influence of the magnetic field on the recombination dynamics of excitons is found. The first case corresponds to CdMnSe/ZnSe structures, while the second one is observed in CdMnTe/ZnTe magnetic quantum dots.