Oscillatory variations of the diagonal (Gxx) and Hall (Gxy) magnetoconductances are discussed in view of topological scaling effects giving rise to the quantum Hall effect. They occur in a field range without oscillations of the density of states due to Landau quantization, and are, therefore, totally different from the Shubnikov-de Haas oscillations. Such oscillations are experimentally observed in disordered GaAs layers in the extreme quantum limit of applied magnetic field with a good description by the unified scaling theory of the integer and fractional quantum Hall effect.
@article{arxiv.cond-mat/0305601,
title = {Topological oscillations of the magnetoconductance in disordered GaAs layers},
author = {S. S. Murzin and A. G. M. Jansen and I. Claus},
journal= {arXiv preprint arXiv:cond-mat/0305601},
year = {2009}
}