Electrically Detected Magnetic Resonance

O.M. Fedorych a , Z. Wilamowski a , W. Jantsch b and J. Sadowski c a Institute of Physics, Polish Academy of Sciences al. Lotników 32/46, 02-668 Warsaw, Poland b Institut für Halbleiterphysik, Johannes Kepler Universität, Linz, Austria c MAX-Lab, Lund University, Po. Box. 118, 221 00 Lund, Sweden

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We compare the results of electrically detected magnetic resonance in a 2D electron gas in Si/SiGe quantum wells with transport and magnetic resonance measurements on ferromagnetic Ga 1- x Mn x As. The results lead us to the conclusion that observation of electrically detected magnetic resonance is possible only in the case of a slow spin relaxation, where the microwave resonant absorption leads to a noticeable change of spin magnetization.

DOI: 10.12693/APhysPolA.105.591 PACS numbers: 76.30.Pk, 72.25.Rb, 73.21.Fg