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Internal Transitions of Two-Dimensional Charged Magneto-Excitons X-: Theory and Experiment

A. B. Dzyubenko, A. Yu. Sivachenko, H. A. Nickel, T. M. Yeo, G. Kioseoglou, B. D. McCombe, A. Petrou

cond-mat.mes-hallarXiv:cond-mat/9907124

Abstract

Internal spin-singlet and spin-triplet transitions of charged excitons X- in magnetic fields in quantum wells have been studied experimentally and theoretically. The allowed X- transitions are photoionizing and exhibit a characteristic double-peak structure, which reflects the rich structure of the magnetoexciton continua in higher Landau levels (LL's). We discuss a novel exact selection rule, a hidden manifestation of translational invariance, that governs transitions of charged mobile complexes in a magnetic field.

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