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Exciton Exchange between Nearly-Free and Acceptor-Bound States of a Positive Trion Assisted by Cyclotron Excitation

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Jadczak J., Bryja L., Wójs A., Bartsch G., Yakovlev D., Bayer M., Plochocka P., Potemski M., Reuter D., Wieck A.

Acta Physica Polonica A

2011

vol. 119

issue 5

600-601

In magneto-photoluminescence spectra of a two-dimensional hole gas in a GaAs quantum well we observe coupling of two different radiative states. The pair of coupled states are an acceptor-bound trion AX^{+} and an essentially free (only weakly localized by a shallow lateral potential) trion X^{+}, brought into resonance by an additional cyclotron excitation controlled by the magnetic field. The coupling mechanism is the exciton transfer, and the optical signature is a clear anticrossing of the emission lines of an X^{+} and a cyclotron replica of the AX^{+}.

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1 Acta Physica Polonica A

1 2011

1 Bartsch G.

1 Bayer M.

1 Bryja L.

1 Jadczak J.

1 Plochocka P.

1 Potemski M.

1 Reuter D.

1 Wieck A.

1 Wójs A.

1 Yakovlev D.

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Exciton Exchange between Nearly-Free and Acceptor-Bound States of a Positive Trion Assisted by Cyclotron Excitation