### Abstract

Original language | Undefined |
---|---|

Pages (from-to) | 125318_1-6 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 80 |

Issue number | 12 |

DOIs | |

Publication status | Published - 2009 |

### Cite this

*Physical Review B - Condensed Matter and Materials Physics*,

*80*(12), 125318_1-6. https://doi.org/10.1103/PhysRevB.80.125318

}

*Physical Review B - Condensed Matter and Materials Physics*, vol. 80, no. 12, pp. 125318_1-6. https://doi.org/10.1103/PhysRevB.80.125318

**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.

Research output

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 -