Microwave response of a two-dimensional electron stripe

TL;DR

This paper theoretically investigates how retardation and radiative effects influence the microwave absorption spectrum of a finite-width two-dimensional electron stripe, revealing complex magnetoplasmon-polariton mode behaviors in magnetic fields.

Contribution

It introduces a theoretical model accounting for retardation and radiative effects on the microwave response of 2D electron stripes, explaining observed zigzag magnetoplasmon-polariton behaviors.

Findings

Retardation and radiative effects significantly alter the absorption spectrum.

The magnetoplasmon-polariton modes exhibit zigzag behavior in magnetic fields.

Theoretical results align with recent experimental observations.

Abstract

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)].