Influence of Coulomb and exchange interaction on quantum dot magnetoluminescence up to B = 45 T

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

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced QD has been studied by high‐field (45 T) magneto‐luminescence measurements and by many‐electron many‐hole Hartree‐Fock calculations. At high magnetic fields the degeneracy of the QD electron and hole ground states is increased as several zero‐field eigenstates merge into the lowest Landau level. This leads to removal of the state filling and accordingly in high magnetic field the QD luminescence is emitted from the lowest Landau level. Using a generalization of Koopmans theorem for electron–hole many particle systems, we have studied the enhancement of the direct and exchange Coulomb interaction in squeezed carrier states. The results show that for 6 to 8 electron–hole pairs the direct and exchange interaction both reduce the diamagnetic shift by 15 to 25%.
    Original languageEnglish
    Pages (from-to)263 - 268
    Number of pages6
    JournalPhysica Status Solidi A: Applied Research
    Volume178
    Issue number1
    DOIs
    Publication statusPublished - 2000
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Exchange interactions
    Coulomb interactions
    Semiconductor quantum dots
    quantum dots
    Magnetic fields
    Ground state
    Luminescence
    interactions
    magnetic fields
    Electrons
    eigenvectors
    theorems
    luminescence
    ground state
    augmentation
    shift
    electrons

    Cite this

    Cingolani, R. ; Rinaldi, R. ; Lipsanen, Harri ; Sopanen, Markku ; Virkkala, R. ; Maijala, K. ; Tulkki, J. ; Ahopelto, Jouni ; Uchida, K. ; Miura, N. ; Arakawa, Y. / Influence of Coulomb and exchange interaction on quantum dot magnetoluminescence up to B = 45 T. In: Physica Status Solidi A: Applied Research. 2000 ; Vol. 178, No. 1. pp. 263 - 268.
    @article{c63455b3bcbd468ebd0cc58a7a434772,
    title = "Influence of Coulomb and exchange interaction on quantum dot magnetoluminescence up to B = 45 T",
    abstract = "The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced QD has been studied by high‐field (45 T) magneto‐luminescence measurements and by many‐electron many‐hole Hartree‐Fock calculations. At high magnetic fields the degeneracy of the QD electron and hole ground states is increased as several zero‐field eigenstates merge into the lowest Landau level. This leads to removal of the state filling and accordingly in high magnetic field the QD luminescence is emitted from the lowest Landau level. Using a generalization of Koopmans theorem for electron–hole many particle systems, we have studied the enhancement of the direct and exchange Coulomb interaction in squeezed carrier states. The results show that for 6 to 8 electron–hole pairs the direct and exchange interaction both reduce the diamagnetic shift by 15 to 25{\%}.",
    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",
    year = "2000",
    doi = "10.1002/1521-396X(200003)178:1<263::AID-PSSA263>3.0.CO;2-U",
    language = "English",
    volume = "178",
    pages = "263 -- 268",
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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 2000, 'Influence of Coulomb and exchange interaction on quantum dot magnetoluminescence up to B = 45 T', Physica Status Solidi A: Applied Research, vol. 178, no. 1, pp. 263 - 268. https://doi.org/10.1002/1521-396X(200003)178:1<263::AID-PSSA263>3.0.CO;2-U

    Influence of Coulomb and exchange interaction on quantum dot magnetoluminescence up to B = 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: Physica Status Solidi A: Applied Research, Vol. 178, No. 1, 2000, p. 263 - 268.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Influence of Coulomb and exchange interaction on quantum dot magnetoluminescence up to B = 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 - 2000

    Y1 - 2000

    N2 - The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced QD has been studied by high‐field (45 T) magneto‐luminescence measurements and by many‐electron many‐hole Hartree‐Fock calculations. At high magnetic fields the degeneracy of the QD electron and hole ground states is increased as several zero‐field eigenstates merge into the lowest Landau level. This leads to removal of the state filling and accordingly in high magnetic field the QD luminescence is emitted from the lowest Landau level. Using a generalization of Koopmans theorem for electron–hole many particle systems, we have studied the enhancement of the direct and exchange Coulomb interaction in squeezed carrier states. The results show that for 6 to 8 electron–hole pairs the direct and exchange interaction both reduce the diamagnetic shift by 15 to 25%.

    AB - The influence of the direct and exchange Coulomb interaction on Landau level formation in strain induced QD has been studied by high‐field (45 T) magneto‐luminescence measurements and by many‐electron many‐hole Hartree‐Fock calculations. At high magnetic fields the degeneracy of the QD electron and hole ground states is increased as several zero‐field eigenstates merge into the lowest Landau level. This leads to removal of the state filling and accordingly in high magnetic field the QD luminescence is emitted from the lowest Landau level. Using a generalization of Koopmans theorem for electron–hole many particle systems, we have studied the enhancement of the direct and exchange Coulomb interaction in squeezed carrier states. The results show that for 6 to 8 electron–hole pairs the direct and exchange interaction both reduce the diamagnetic shift by 15 to 25%.

    U2 - 10.1002/1521-396X(200003)178:1<263::AID-PSSA263>3.0.CO;2-U

    DO - 10.1002/1521-396X(200003)178:1<263::AID-PSSA263>3.0.CO;2-U

    M3 - Article

    VL - 178

    SP - 263

    EP - 268

    JO - Physica Status Solidi A: Applications and Materials Science

    JF - Physica Status Solidi A: Applications and Materials Science

    SN - 1862-6300

    IS - 1

    ER -