2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27893We have investigated experimentally and theoretically the far-infrared (FIR) absorption of gated, deep-mesa-etched GaAs/Al$_x$Ga$_{1-x}$As quantum wires. To overcome Kohn's theorem we have in particular prepared double-layered wires and studied the acoustic magnetoplasmon branch. We find oscillations in the magnetic-field dispersion of the acoustic plasmon which are traced back to the self-consistently screened density profile in its dependence on the magnetic depopulation of the one-dimensional subbands.LaTeX-file, 4 pages with 3 included ps-figures, to appear in Physica EMesoscale and Nanoscale PhysicsStrongly Correlated Electronstext