Coupled electron-nuclear spin dynamics in quantum dots: A graded box model approach

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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.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 12, 2009, p. 125318_1-6.

Research output: Contribution to journal › Article

BibTeX

@article{077fdd8800dc463dafd7e4cb1ab10dc6,

title = "Coupled electron-nuclear spin dynamics in quantum dots: A graded box model approach",

abstract = "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.",

author = "Petrov, {M. Yu.} and Kozlov, {G. G.} and Ignatiev, {I. V.} and Cherbunin, {R. V.} and Yakovlev, {D. R.} and M. Bayer",

year = "2009",

doi = "10.1103/PhysRevB.80.125318",

language = "не определен",

volume = "80",

pages = "125318_1--6",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "12",

}

RIS

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