Photoluminescence signatures of negatively charged magnetoexcitons

James R. Chapman, Neil F. Johnson, V. Nikos Nicopoulos

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

The negatively charged quasi-two-dimensional exciton (Formula presented) is studied numerically in the presence of a uniform perpendicular (Formula presented) field and various in-plane confinements. The corresponding photoluminescence (PL) spectra, including shakeup processes, are calculated. These calculations provide a quantitative explanation of recent experimental PL spectra. The photoluminescence signatures of charged excitons in quantum dots are also examined. Electron-hole pair distribution functions are calculated that show the structure of the charged exciton states (both ground and excited states). Increasing excitation reflects a competition between two effects: partial ionization of either one or two electrons.

Original languageEnglish (US)
Pages (from-to)1762-1773
Number of pages12
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number3
DOIs
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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