Équipe de Recherche en Physique de l'Information Quantique


Abstract = {We have performed simultaneous measurements of microwave absorption/reflection and magneto-transport characteristics of a high-mobility two-dimensional electrons in GaAs-AlGaAs heterostructure in the regime of microwave-induced resistance oscillations (MIROs). It is shown that the electrodynamic aspect of the problem is important in these experiments. In the absorption experiments, a broad cyclotron resonance 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 Ryzhii 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.},
Author = {Studenikin, S.A. and Potemski, M. and Sachrajda, A.S. and Hilke, M. and Pfeiffer, L.N. and West, K.W.},
Document_Type = {Conference Paper},
Journal = {IEEE Transactions on Nanotechnology},
Number = {1},
Pages = {124-130},
Source = {Scopus},
Title = {Microwave absorption/reflection and magneto-transport experiments on high-mobility electron gas},
Url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-12844250096&partnerID=40&md5=36eb510c681f85d9965634df40d61bc7},
Volume = {4},
Year = {2005},
Bdsk-Url-1 = {http://www.scopus.com/inward/record.url?eid=2-s2.0-12844250096&partnerID=40&md5=36eb510c681f85d9965634df40d61bc7}}