Результаты исследований: Научные публикации в периодических изданиях › статья
Coupled electron-nuclear spin dynamics in quantum dots: A graded box model approach. / Petrov, M. Yu.; Kozlov, G. G.; Ignatiev, I. V.; Cherbunin, R. V.; Yakovlev, D. R.; Bayer, M.
в: Physical Review B - Condensed Matter and Materials Physics, Том 80, № 12, 2009, стр. 125318_1-6.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - Coupled electron-nuclear spin dynamics in quantum dots: A graded box model approach
AU - Petrov, M. Yu.
AU - Kozlov, G. G.
AU - Ignatiev, I. V.
AU - Cherbunin, R. V.
AU - Yakovlev, D. R.
AU - Bayer, M.
PY - 2009
Y1 - 2009
N2 - The dynamics of electron and nuclear spin polarization in an ensemble of singly negatively charged quantum dots subject to optical excitation is theoretically studied using a graded box model, in which the electron density is approximated by a sequence of steps. The model is numerically implemented for a limited number of nuclei up to N=192 with spins I=1/2 or I=3/2. The polarization dynamics is found to depend strongly on the polarized excitation protocol. For excitation by periodic laser pulses, the electron-nuclear spin dynamics evolves coherently and gives rise to a recurrence effect in the electron spin dynamics as well as to a decelerated nuclear polarization. The validity of the model is justified by comparison with experimental data on the electron spin polarization in In,GaAs/GaAs quantum dots.
AB - The dynamics of electron and nuclear spin polarization in an ensemble of singly negatively charged quantum dots subject to optical excitation is theoretically studied using a graded box model, in which the electron density is approximated by a sequence of steps. The model is numerically implemented for a limited number of nuclei up to N=192 with spins I=1/2 or I=3/2. The polarization dynamics is found to depend strongly on the polarized excitation protocol. For excitation by periodic laser pulses, the electron-nuclear spin dynamics evolves coherently and gives rise to a recurrence effect in the electron spin dynamics as well as to a decelerated nuclear polarization. The validity of the model is justified by comparison with experimental data on the electron spin polarization in In,GaAs/GaAs quantum dots.
U2 - 10.1103/PhysRevB.80.125318
DO - 10.1103/PhysRevB.80.125318
M3 - статья
VL - 80
SP - 125318_1-6
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 12
ER -
ID: 5119178