Coulomb correlations in a two-dimensional electron gas in large magnetic fields

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.9567

Former, N. A. ; Schüller, Christian ; Lai, W. C. ; Chemla, D. S. ; Perakis, I. E. ; Driscoll, D. ; Gossard, A. C.

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Veröffentlichungsdatum dieses Volltextes: 25 Sep 2009 07:39

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Zusammenfassung

We present an investigation of the dynamics of the inter-Landau-level (LL) excitations of a two-dimensional electron gas (2DEG) in large magnetic fields using coherent time-resolved nonlinear spectroscopy. The results are compared directly with measurements on undoped quantum wells. We observe time-dependent Coulomb coupling between the LL's induced by the 2DEG that induces a large transfer of ...