title: Blocking of the polaron effect and spin-split cyclotron resonance in a two-dimensional electron Gas
abstract: Cyclotron resonance (CR) of high density GaAs quantum wells exhibits well-resolved spin splitting above the LO-phonon frequency. The spin-up and spin-down CR frequencies are reversed relative to the order expected from simple band nonparabolicity. We demonstrate that this is a consequence of the blocking of the polaron interaction which is a sensitive function of the filling of the Landau levels.
authors.affiliation: National Laboratory for Superlattice and Microstructure, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
authors.initials: XG
authors.lastname: Wu
authors.initials: FM
authors.lastname: Peeters
authors.initials: YJ
authors.lastname: Wang
authors.initials: BD
authors.lastname: McCombe