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

R. Cingolani, R. Rinaldi, H. Lipsanen, M. Sopanen, R. Virkkala, K. Maijala, Jukka Tulkki, J. Ahopelto, K. Uchida, N. Miura, Y. Arakawa

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

20 Sitaatiot (Scopus)
141 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
Sivut4832-4835
Sivumäärä4
JulkaisuPhysical Review Letters
Vuosikerta83
Numero23
DOI - pysyväislinkit
TilaJulkaistu - 6 jouluk. 1999
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Tutkimusalat

  • magnetic field
  • quantum dot

Sormenjälki

Sukella tutkimusaiheisiin 'Electron-hole correlation in quantum dots under a high magnetic field (up to 45T)'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä