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Type: Artigo de periódico
Title: Fine structure of a biexciton in a single quantum dot with a magnetic impurity
Author: Trojnar, AH
Korkusinski, M
Mendes, UC
Goryca, M
Koperski, M
Smolenski, T
Kossacki, P
Wojnar, P
Hawrylak, P
Abstract: We show theoretically and experimentally that the ground state of a biexciton in a CdTe self-assembled quantum dot with a magnetic Mn impurity exhibits a fine structure due to electron-electron Coulomb and electron-Mn exchange interactions. Results of exact diagonalization of the microscopic biexciton-manganese-ion model predict a pattern of three pairs of states in the ground-state manifold, each pair labeled by the projection of Mn spin. We show that the fine structure determines the ordering of the biexciton emission maxima and can be derived from the biexciton and exciton emission spectra. Theoretical predictions are successfully compared with measured biexciton and exciton emission spectra of a single CdTe dot with a Mn ion in its center.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review B. Amer Physical Soc, v. 87, n. 20, 2013.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.87.205311
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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