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Photoluminescence signatures of negatively charged magnetoexcitons

J. R. Chapman·N. F. Johnson·V. N. Nicopoulos
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Abstract

The negatively charged quasi-two-dimensional exciton ($X^-$) is studied numerically in the presence of a uniform B-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 distriution functions are calculated which 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.

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J. R. Chapman, N. F. Johnson, V. N. Nicopoulos. 1997-10-01. Photoluminescence signatures of negatively charged magnetoexcitons. https://doi.org/10.1103/physrevb.57.1762

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