Large Filling-Factor-Dependent Spin Splitting in Magnetooptic Kerr Effect in GaAs/AlGaAs Multiple Quantum Wells |
| E. Dudziak, J. Bozym, D. Pruchnik Institute of Physics, University of Technology of Wrocław, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland and Z.R. Wasilewski Institute for Microstructural Sciences, National Research Council, K1AOR6 Ottawa, Canada |
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| Magnetooptic Kerr effect in GaAs/Al0.312Ga0.688As multiple quantum wells was investigated in the integer quantum Hall regime. The measurements have been performed in magnetic fields up to 14.5 T, at the temperature of 1.8 K. Experimental data indicate the discontinuous behavior of the magnetooptic Kerr effect spectrum as a function of the filling factor. For odd filling factor values ν=3 and 5 we observe the large spin splitting. The effects cannot be explained in the one-particle model. |
| DOI: 10.12693/APhysPolA.94.291 PACS numbers: 78.20.Ls, 73.20.Dx, 78.66.Fd |