Abstract:
The dispersion of the volume relativistic magnetoplasma mode in a gated GaAs/AlGaAs quantum well is measured using a coupled resonators detection technique. The weakly damped relativistic mode exhibits an unusual zigzag-shaped magnetodispersion dependence dictated by the diagonal component of the resistivity tensor $\rho_{xx}$. The plasma excitation easily hybridizes with photon modes due to a large spatial delocalization of its electromagnetic field. The effects of electron density and structure geometry on the excitation spectrum have been investigated.
Citation:
P. A. Gusikhin, V. M. Muravev, I. V. Kukushkin, “Dispersion of volume relativistic magnetoplasma excitation in a gated two-dimensional electron system”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:11 (2015), 859–863; JETP Letters, 102:11 (2015), 749–753