Effects of electron–hole correlation in quantum dots under high magnetic field (up to 45 T)

R. Cingolani; M. De Giorgi; R. Rinaldi; H. Lipsanen; M. Sopanen; R. Virkkala; K. Maijala; J. Tulkki; Jouni Ahopelto; K. Uchida; N. Miura; Y. Arakawa

doi:10.1016/S1386-9477(99)00338-0

Effects of electron–hole correlation in quantum dots under high magnetic field (up to 45 T)

R. Cingolani
, M. De Giorgi^*
, R. Rinaldi
, H. Lipsanen
, M. Sopanen
, R. Virkkala
, K. Maijala
, J. Tulkki
, Jouni Ahopelto
, K. Uchida
, N. Miura
, Y. Arakawa

^*Corresponding author for this work

University of Salento
Helsinki University of Technology
University of Tokyo

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

2 Citations (Scopus)

Abstract

The influence of the direct and exchange Coulomb interaction on Landau level formation in strain-induced quantum dots (QD) has been studied by high-field (45 T) magneto-luminescence and by many-electron–many-hole Hartree–Fock calculations. The Darwin–Fock states of the dots are found to merge into a single 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 language	English
Pages (from-to)	346-349
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	7
Issue number	3-4
DOIs	https://doi.org/10.1016/S1386-9477(99)00338-0
Publication status	Published - 2000
MoE publication type	A1 Journal article-refereed

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Cingolani, R., De Giorgi, M., Rinaldi, R., Lipsanen, H., Sopanen, M., Virkkala, R., Maijala, K., Tulkki, J., Ahopelto, J., Uchida, K., Miura, N., & Arakawa, Y. (2000). Effects of electron–hole correlation in quantum dots under high magnetic field (up to 45 T). Physica E: Low-Dimensional Systems and Nanostructures, 7(3-4), 346-349. https://doi.org/10.1016/S1386-9477(99)00338-0

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title = "Effects of 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 (QD) has been studied by high-field (45 T) magneto-luminescence and by many-electron–many-hole Hartree–Fock calculations. The Darwin–Fock states of the dots are found to merge into a single 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 \{De Giorgi\}, M. and R. Rinaldi and H. Lipsanen and M. Sopanen and R. Virkkala and K. Maijala and J. Tulkki and Jouni Ahopelto and K. Uchida and N. Miura and Y. Arakawa",

year = "2000",

doi = "10.1016/S1386-9477(99)00338-0",

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Cingolani, R, De Giorgi, M, Rinaldi, R, Lipsanen, H, Sopanen, M, Virkkala, R, Maijala, K, Tulkki, J, Ahopelto, J, Uchida, K, Miura, N & Arakawa, Y 2000, 'Effects of electron–hole correlation in quantum dots under high magnetic field (up to 45 T)', Physica E: Low-Dimensional Systems and Nanostructures, vol. 7, no. 3-4, pp. 346-349. https://doi.org/10.1016/S1386-9477(99)00338-0

TY - JOUR

T1 - Effects of electron–hole correlation in quantum dots under high magnetic field (up to 45 T)

AU - Cingolani, R.

AU - De Giorgi, M.

AU - Rinaldi, R.

AU - Lipsanen, H.

AU - Sopanen, M.

AU - Virkkala, R.

AU - Maijala, K.

AU - Tulkki, J.

AU - Ahopelto, Jouni

AU - Uchida, K.

AU - Miura, N.

AU - Arakawa, Y.

PY - 2000

Y1 - 2000

N2 - The influence of the direct and exchange Coulomb interaction on Landau level formation in strain-induced quantum dots (QD) has been studied by high-field (45 T) magneto-luminescence and by many-electron–many-hole Hartree–Fock calculations. The Darwin–Fock states of the dots are found to merge into a single 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 (QD) has been studied by high-field (45 T) magneto-luminescence and by many-electron–many-hole Hartree–Fock calculations. The Darwin–Fock states of the dots are found to merge into a single 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 - 10.1016/S1386-9477(99)00338-0

DO - 10.1016/S1386-9477(99)00338-0

M3 - Article

SN - 1386-9477

VL - 7

SP - 346

EP - 349

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 3-4

ER -

Effects of electron–hole correlation in quantum dots under high magnetic field (up to 45 T)

Abstract

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