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Microwave radiation induced collective response in Si/SiGe heterostructures with a 2D electron gas |
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| Authors: | S Sassine Yu Krupko ZD Kvon JM Hartmann |
| Institution: | a GHMFL, CNRS, BP 166, F-38042, Grenoble Cedex 9, France b INSA, 135 Avenue de Rangueil, F-31077, Toulouse Cedex 4, France c Institute of Semiconductor Physics, Novosibirsk 630090, Russia d Institut Universitaire de France, 103 Bd. St. Michel, F-75005, Paris, France e CEA/LETI, F-38054, Grenoble Cedex 9, France f University College, London WC 15 75, United Kingdom |
| Abstract: | The collective resonant photoresponse in Si/SiGe structures with a 2DEG under microwave radiation is reported for the first time. The application of microwave radiation of various frequencies results in resonant photoconductivity at magnetic field values that are systematically lower than expected for the cyclotron resonance (CR) in an infinitely large two-dimensional electron system. The analysis of the data shows that the observed microwave radiation induced response is dominated by plasmon excitations. |
| Keywords: | 73 23 -b 74 80 Fp 74 50 +r 73 20 Fz |
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