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- 저자 : Yoan Leger (검색결과 1 건)
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Kinetics of Circular Polarization in p-Doped Single Quantum Dots
Yoan Leger,Lucien Besombes,Laurent Maingault,Henri Mariette 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.1
We report time-resolved photoluminescence experiments in p-doped single CdTe/ZnTe quantum dots (QDs) with a number of resident holes ranging from 0 to 2. Under resonant circularly polarized excitation on an excited state, the charged species present a large polarization rate at a short time delay. A signicant reduction of this initial polarization rate is observed during the recombination time. This reduction is faster for the QD containing two holes than for the QD doped with a single hole. This eect is interpreted in terms of the interplay between the S electron - P hole anisotropic exchange interaction and the irreversibility due to either the thermalization or the recombination. We report time-resolved photoluminescence experiments in p-doped single CdTe/ZnTe quantum dots (QDs) with a number of resident holes ranging from 0 to 2. Under resonant circularly polarized excitation on an excited state, the charged species present a large polarization rate at a short time delay. A signicant reduction of this initial polarization rate is observed during the recombination time. This reduction is faster for the QD containing two holes than for the QD doped with a single hole. This eect is interpreted in terms of the interplay between the S electron - P hole anisotropic exchange interaction and the irreversibility due to either the thermalization or the recombination.
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