Quantization of the Faraday effect in systems with a quantum Hall effect
Volkov V. A., Mikhailov S. A.
The angle of rotation of the polarization plane of low-frequency electromagnetic radiation, φ, transmitted through a two-dimensional (2D) electronic layer, which is in a regime corresponding to an integer or fractional quantum Hall effect, is found to be quantized. In certain cases Αφ — e2/tic = 1/137 deg.