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Electron-hole correlation in quantum dots under a high magnetic field (up to 45T)
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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4
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Physical Review Letters, Volume 83, issue 23, pp. 4832-4835
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.
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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 a high magnetic field (up to 45T)', Physical Review Letters, vol. 83, no. 23, pp. 4832-4835. https://doi.org/10.1103/PhysRevLett.83.4832