Electromagnetic response of a finite-width two-dimensional electron stripe is theoretically studied. It is shown that retardation and radiative effects substantially modify the absorption spectrum of the system at microwave frequencies, leading to a non-trivial zigzag behavior of the magnetoplasmon-polariton modes in magnetic fields, similar to that recently observed by Kukushkin et al. [Phys. Rev. Lett. {\bf 90}, 156801 (2003)].
@article{arxiv.cond-mat/0407364,
title = {Microwave response of a two-dimensional electron stripe},
author = {S. A. Mikhailov and N. A. Savostianova},
journal= {arXiv preprint arXiv:cond-mat/0407364},
year = {2009}
}