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Electron-hole exchange interaction in a negatively charged quantum dot. / Akimov, I. A.; Kavokin, K. V.; Hundt, A.; Henneberger, F.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 71, No. 7, 075326, 01.02.2005.

Research output: Contribution to journal › Article › peer-review

Harvard

Akimov, IA, Kavokin, KV, Hundt, A & Henneberger, F 2005, 'Electron-hole exchange interaction in a negatively charged quantum dot', Physical Review B - Condensed Matter and Materials Physics, vol. 71, no. 7, 075326. https://doi.org/10.1103/PhysRevB.71.075326

APA

Akimov, I. A., Kavokin, K. V., Hundt, A., & Henneberger, F. (2005). Electron-hole exchange interaction in a negatively charged quantum dot. Physical Review B - Condensed Matter and Materials Physics, 71(7), [075326]. https://doi.org/10.1103/PhysRevB.71.075326

Vancouver

Akimov IA, Kavokin KV, Hundt A, Henneberger F. Electron-hole exchange interaction in a negatively charged quantum dot. Physical Review B - Condensed Matter and Materials Physics. 2005 Feb 1;71(7). 075326. https://doi.org/10.1103/PhysRevB.71.075326

Author

Akimov, I. A. ; Kavokin, K. V. ; Hundt, A. ; Henneberger, F. / Electron-hole exchange interaction in a negatively charged quantum dot. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 71, No. 7.

BibTeX

@article{428a913468a340abbb8be0f7eed80c74,
title = "Electron-hole exchange interaction in a negatively charged quantum dot",
abstract = "The fine structure of the {"}excited-electron{"} trion triplet state in negatively charged CdSe/ZnSe self-assembled quantum dots is studied using polarization-selective as well as magneto-photoluminescence spectroscopy on a single-dot level. The charged biexciton emission where the optically active triplet states with total angular momentum projections ±1/2 and ±3/2 are left behind is used as a monitor. The line separation provides an energy of Δ 0=1.5 meV for the isotropic electron-hole exchange interaction. The anisotropic electron-hole exchange creates a mixing between ±1/2 and ±3/2 triplet states resulting in partially linear polarization as well as specific g factors of the optical transitions. Studying experimentally both types of manifestations, we find a ratio between the anisotropic and isotropic part of Δ 1/Δ 0 ≈ 0.5, distinctly larger than for the exciton in uncharged quantum dots. This is caused by the fact that the electron participating in the exchange is in an excited state enhancing the anisotropy.",
author = "Akimov, {I. A.} and Kavokin, {K. V.} and A. Hundt and F. Henneberger",
year = "2005",
month = feb,
day = "1",
doi = "10.1103/PhysRevB.71.075326",
language = "English",
volume = "71",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "7",

}

RIS

TY - JOUR

T1 - Electron-hole exchange interaction in a negatively charged quantum dot

AU - Akimov, I. A.

AU - Kavokin, K. V.

AU - Hundt, A.

AU - Henneberger, F.

PY - 2005/2/1

Y1 - 2005/2/1

N2 - The fine structure of the "excited-electron" trion triplet state in negatively charged CdSe/ZnSe self-assembled quantum dots is studied using polarization-selective as well as magneto-photoluminescence spectroscopy on a single-dot level. The charged biexciton emission where the optically active triplet states with total angular momentum projections ±1/2 and ±3/2 are left behind is used as a monitor. The line separation provides an energy of Δ 0=1.5 meV for the isotropic electron-hole exchange interaction. The anisotropic electron-hole exchange creates a mixing between ±1/2 and ±3/2 triplet states resulting in partially linear polarization as well as specific g factors of the optical transitions. Studying experimentally both types of manifestations, we find a ratio between the anisotropic and isotropic part of Δ 1/Δ 0 ≈ 0.5, distinctly larger than for the exciton in uncharged quantum dots. This is caused by the fact that the electron participating in the exchange is in an excited state enhancing the anisotropy.

AB - The fine structure of the "excited-electron" trion triplet state in negatively charged CdSe/ZnSe self-assembled quantum dots is studied using polarization-selective as well as magneto-photoluminescence spectroscopy on a single-dot level. The charged biexciton emission where the optically active triplet states with total angular momentum projections ±1/2 and ±3/2 are left behind is used as a monitor. The line separation provides an energy of Δ 0=1.5 meV for the isotropic electron-hole exchange interaction. The anisotropic electron-hole exchange creates a mixing between ±1/2 and ±3/2 triplet states resulting in partially linear polarization as well as specific g factors of the optical transitions. Studying experimentally both types of manifestations, we find a ratio between the anisotropic and isotropic part of Δ 1/Δ 0 ≈ 0.5, distinctly larger than for the exciton in uncharged quantum dots. This is caused by the fact that the electron participating in the exchange is in an excited state enhancing the anisotropy.

UR - http://www.scopus.com/inward/record.url?scp=15744384120&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.71.075326

DO - 10.1103/PhysRevB.71.075326

M3 - Article

AN - SCOPUS:15744384120

VL - 71

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 7

M1 - 075326

ER -

ID: 39911583