Cyclotron Resonance in Two-Dimensional Electron Single-Layers and   Double-Layers in Tilted Magnetic Fields
  The far-infrared absorption in two-dimensional electron layers subject to magnetic field of general orientation was studied theoretically. The Kubo formula was employed to derive diagonal components of the magneto-conductivity tensor of two-dimensional electron single-layers and double-layers. A parabolic quantum well was used to model single-layer systems. Bilayer systems were represented by a pair of tunnel-coupled, strictly two-dimensional quantum wells. Obtained results were compared to experimental data. 
N. Goncharuk, L. Smrcka and J. Kucera