Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-11-24
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
13 pages, 11 figures
Scientific paper
We present the results of localized charge time evolution detailed analysis in the system of interacting quantum dots (artificial molecule) coupled with continuous spectrum states. The influence of Coulomb interaction between localized electrons in one of the quantum dots which is also connected with the continuous spectrum states on the localized charge time evolution was also investigated. We have found that Coulomb interaction of localized electrons strongly modifies the relaxation rates and results in appearance of the several time ranges with considerably different relaxation time scales. Moreover we revealed that Coulomb interaction induces charge redistribution between different modes in each quantum dot which is responsible for non-monotonic time evolution of localized charges. We also pointed out that particular distribution function of the continuous spectrum electrons even in the absence of Coulomb interaction results in the difference of filling numbers time evolution from the simple exponential law.
Arseyev P. I.
Mantsevich V. N.
Maslova N. S.
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