DOI | Trouver le DOI : https://doi.org/10.1142/S021797920402686X |
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Auteur | Rechercher : Studenikin, S. A.1; Rechercher : Potemski, M.; Rechercher : Sachrajda, A. S.1; Rechercher : Hilke, M.; Rechercher : Pfeiffer, L. N.; Rechercher : West, K. W. |
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Affiliation | - Conseil national de recherches du Canada. Institut des sciences des microstructures du CNRC
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Format | Texte, Article |
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Résumé | We have performed microwave absorption and near-field reflection experiments on a high mobility GaAs/AlGaAs heterostructure for the same conditions for which Microwave-Induced Resistance Oscillations (MIROs) are observed. It is shown that the electrodynamic aspect of the problem is important in these experiments. In the absorption experiments a broad CR line was observed due to a large reflection from the highly conductive electron gas. There were no additional features observed related to absorption at harmonics of the cyclotron resonance. In near-field reflection experiments a very different oscillation pattern was revealed when compared to MIROs. The oscillation pattern observed in the reflection experiments is probably due to plasma effects occurring in a finite-size sample. The whole microscopic picture of MIROs is more complicated than simply a resonant absorption at harmonics of the cyclotron resonance. Nevertheless, the experimental observations are in good agreement with the model by Durst et al. involving the photo-assisted scattering in the presence of a crossed magnetic field and dc bias. The observed damping factor of MIROs may be attributed to a change in the electron mobility as a function of temperature. MIROs may be considered as a light-induced drift effect, a broad class of phenomena associated with a light-induced asymmetry in the velocity distribution function. |
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Date de publication | 2004 |
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Dans | |
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Numéro NPARC | 12744543 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | 88965077-f05e-40b3-9595-e9c42ce6eaff |
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Enregistrement créé | 2009-10-27 |
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Enregistrement modifié | 2020-04-17 |
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