The effect of Landau quantization on cyclotron resonance in a non-parabolic quantum wells

Electron cyclotron resonance is studied in very deep quantum wells consisting of InAs between AlSb barriers. High electron mobility and strong conduction band non-parabolicity together with the small effective mass and the large effective g factor of this material enables the authors to observe simultaneous cyclotron transitions between adjacent sets of spin-split Landau states. Their experiments resolve spin-conserving transitions involving two or three different Landau levels depending on the filling factor. The results are compatible with a single-particle model.