Femtosecond dynamics of inter-Landau level excitations of a two dimensional electron gas in the quantum Hall regime
| Autor: | D. C. Driscoll, N. A. Fromer, Ilias E. Perakis, T. V. Shahbazyan, Daniel S. Chemla, A. C. Gossard, Christian Schüller |
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| Rok vydání: | 2002 |
| Předmět: |
Physics
Condensed matter physics Dephasing Quantum point contact Degenerate energy levels Energy level splitting Dynamics (mechanics) Landau quantization Quantum Hall effect Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Gallium arsenide chemistry.chemical_compound Quantum spin Hall effect chemistry Quantum mechanics Femtosecond Atomic physics Fermi gas Ultrashort pulse Quantum well Excitation |
| Zdroj: | Technical Digest. Summaries of papers presented at the Quantum Electronics and Laser Science Conference. Postconference Technical Digest (IEEE Cat. No.01CH37172). |
| Popis: | We use degenerate four-wave mixing to investigate the dynamics of electron–hole pairs interacting with magnetoplasmon excitations of a two-dimensional electron gas (2DEG) in the quantum Hall effect regime. We observe a strong coupling between Landau levels induced by the magnetoplasmon interactions, leading to a transfer of our signal strength to the lowest Landau level, as well as strong non-Markovian effects. These observations are interpreted within a model taking into account the many body Hamiltonian for the 2DEG system. |
| Databáze: | OpenAIRE |
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