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Excitons and Trions in Modulation Doped Structures in High Magnetic Fields

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Kochereshko V., Andronikov D., Platonov A., Crooker S., Barrick T., Karczewski G., Tronc P.

Acta Physica Polonica A

2004

vol. 106

issue 3

319-328

Photoluminescence spectra of modulation-doped CdTe/CdMgTe quantum well structures containing two-dimensional electron gases of low, moderate and high electron concentrations were studied in high magnetic fields up to 45 T. The recombination line of triplet trion state was found in the spectra. A model calculation of photoluminescence spectra in magnetic fields, which takes into account singlet and triplet trion states, was carried out. It was shown that the dark triplet becomes observable in photoluminescence spectra because it becomes the only recombination channel when the formation of the singlet trion state is suppressed by magnetic fields.

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1 Acta Physica Polonica A

1 2004

1 Andronikov D.

1 Barrick T.

1 Crooker S.

1 Karczewski G.

1 Kochereshko V.

1 Platonov A.

1 Tronc P.

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Excitons and Trions in Modulation Doped Structures in High Magnetic Fields