Electron-hole correlation in quantum dots under high magnetic field (up to 45 T)

R. Cingolani, R. Rinaldi, Harri Lipsanen, Markku Sopanen, R. Virkkala, K. Maijala, J Tulkki, Jouni Ahopelto, K. Uchida, N. Miura, Y. Arakawa

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20 Citations (Scopus)

Abstract

The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced quantum dots has been studied by high-field (45 T) magnetoluminescence and by many-electron many-hole Hartree-Fock calculations. The Darwin Fock states of the dots are found to merge into a unique Landau level at very high fields with a considerable reduction in the total diamagnetic shift due to the enhanced electron-hole correlation caused by the increased degeneracy of the state. We calculate a 50% reduction of the diamagnetic shift as a result of direct and exchange Coulomb interaction in the squeezed carrier states, in excellent agreement with the experimental findings.
Original languageEnglish
Pages (from-to)4832-4835
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number23
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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quantum dots
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Cingolani, R., Rinaldi, R., Lipsanen, H., Sopanen, M., Virkkala, R., Maijala, K., ... Arakawa, Y. (1999). Electron-hole correlation in quantum dots under high magnetic field (up to 45 T). Physical Review Letters, 83(23), 4832-4835. https://doi.org/10.1103/PhysRevLett.83.4832
Cingolani, R. ; Rinaldi, R. ; Lipsanen, Harri ; Sopanen, Markku ; Virkkala, R. ; Maijala, K. ; Tulkki, J ; Ahopelto, Jouni ; Uchida, K. ; Miura, N. ; Arakawa, Y. / Electron-hole correlation in quantum dots under high magnetic field (up to 45 T). In: Physical Review Letters. 1999 ; Vol. 83, No. 23. pp. 4832-4835.
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title = "Electron-hole correlation in quantum dots under high magnetic field (up to 45 T)",
abstract = "The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced quantum dots has been studied by high-field (45 T) magnetoluminescence and by many-electron many-hole Hartree-Fock calculations. The Darwin Fock states of the dots are found to merge into a unique Landau level at very high fields with a considerable reduction in the total diamagnetic shift due to the enhanced electron-hole correlation caused by the increased degeneracy of the state. We calculate a 50{\%} reduction of the diamagnetic shift as a result of direct and exchange Coulomb interaction in the squeezed carrier states, in excellent agreement with the experimental findings.",
author = "R. Cingolani and R. Rinaldi and Harri Lipsanen and Markku Sopanen and R. Virkkala and K. Maijala and J Tulkki and Jouni Ahopelto and K. Uchida and N. Miura and Y. Arakawa",
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Cingolani, R, Rinaldi, R, Lipsanen, H, Sopanen, M, Virkkala, R, Maijala, K, Tulkki, J, Ahopelto, J, Uchida, K, Miura, N & Arakawa, Y 1999, 'Electron-hole correlation in quantum dots under high magnetic field (up to 45 T)', Physical Review Letters, vol. 83, no. 23, pp. 4832-4835. https://doi.org/10.1103/PhysRevLett.83.4832

Electron-hole correlation in quantum dots under high magnetic field (up to 45 T). / Cingolani, R.; Rinaldi, R.; Lipsanen, Harri; Sopanen, Markku; Virkkala, R.; Maijala, K.; Tulkki, J; Ahopelto, Jouni; Uchida, K.; Miura, N.; Arakawa, Y.

In: Physical Review Letters, Vol. 83, No. 23, 1999, p. 4832-4835.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Electron-hole correlation in quantum dots under high magnetic field (up to 45 T)

AU - Cingolani, R.

AU - Rinaldi, R.

AU - Lipsanen, Harri

AU - Sopanen, Markku

AU - Virkkala, R.

AU - Maijala, K.

AU - Tulkki, J

AU - Ahopelto, Jouni

AU - Uchida, K.

AU - Miura, N.

AU - Arakawa, Y.

PY - 1999

Y1 - 1999

N2 - The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced quantum dots has been studied by high-field (45 T) magnetoluminescence and by many-electron many-hole Hartree-Fock calculations. The Darwin Fock states of the dots are found to merge into a unique Landau level at very high fields with a considerable reduction in the total diamagnetic shift due to the enhanced electron-hole correlation caused by the increased degeneracy of the state. We calculate a 50% reduction of the diamagnetic shift as a result of direct and exchange Coulomb interaction in the squeezed carrier states, in excellent agreement with the experimental findings.

AB - The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced quantum dots has been studied by high-field (45 T) magnetoluminescence and by many-electron many-hole Hartree-Fock calculations. The Darwin Fock states of the dots are found to merge into a unique Landau level at very high fields with a considerable reduction in the total diamagnetic shift due to the enhanced electron-hole correlation caused by the increased degeneracy of the state. We calculate a 50% reduction of the diamagnetic shift as a result of direct and exchange Coulomb interaction in the squeezed carrier states, in excellent agreement with the experimental findings.

U2 - 10.1103/PhysRevLett.83.4832

DO - 10.1103/PhysRevLett.83.4832

M3 - Article

VL - 83

SP - 4832

EP - 4835

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 23

ER -

Cingolani R, Rinaldi R, Lipsanen H, Sopanen M, Virkkala R, Maijala K et al. Electron-hole correlation in quantum dots under high magnetic field (up to 45 T). Physical Review Letters. 1999;83(23):4832-4835. https://doi.org/10.1103/PhysRevLett.83.4832