We investigate intra-Landau-level collective excitations in a bilayer disordered two-dimensional electron system exposed to a perpendicular magnetic field. The energy spectrum is calculated within the random phase approximation by taking into account electron-impurity scattering in the self-consistent Born approximation which includes consistent vertex corrections. Signatures of these bilayer excitations in drag and collective excitation measurements are identified.
@article{arxiv.cond-mat/0309076,
title = {Intra-Landau-level collective excitations in a bilayer disordered electronic system},
author = {Samvel M. Badalyan and Chang Sub Kim},
journal= {arXiv preprint arXiv:cond-mat/0309076},
year = {2015}
}