Excitonic energy shell structure of self-assembled InGaAs/GaAs quantum dots.
نویسندگان
چکیده
Performing optical spectroscopy of highly homogeneous quantum dot arrays in ultrahigh magnetic fields, an unprecedently well resolved Fock-Darwin spectrum is observed. The existence of up to four degenerate electronic shells is demonstrated where the magnetic field lifts the initial degeneracies, which reappear when levels with different angular momenta come into resonance. The resulting level shifting and crossing pattern also show evidence of many-body effects such as the mixing of configurations and exciton condensation at the resonances.
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ورودعنوان ژورنال:
- Physical review letters
دوره 92 18 شماره
صفحات -
تاریخ انتشار 2004