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Influence of the Magnetic Polaron Formation on the Exciton Kinetics in Cd 1—x Mn x Te/ZnTe Multiple Quantum Wells
Author(s) -
Pittini R.,
Shen J.X.,
Takahashi M.,
Oka Y.
Publication year - 2000
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(200009)221:1<355::aid-pssb355>3.0.co;2-m
Subject(s) - polaron , exciton , biexciton , spins , condensed matter physics , quantum well , relaxation (psychology) , exchange interaction , chemistry , spectral line , quantum dot , physics , electron , optoelectronics , ferromagnetism , optics , quantum mechanics , laser , psychology , social psychology
We present optical pump–probe experiments carried out in Cd 1— x Mn x Te/ZnTe multiple quantum wells to study the dynamics of excitons, exchange‐coupled to Mn spins in the form of magnetic polarons. From the analysis of the transient absorption spectra, we found that the magnetic polaron formation a) suppresses the formation of biexcitons (this simplifies the lineshape analysis of the pump–probe spectra) and b) retards the energy relaxation of the excitons by 14 ps in these semimagnetic structures.