2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20710We propose to use phonon absorption spectroscopy to study many-body gaps and phases of two-subband heterostructures in the quantum Hall regime. Implications of the spin-orbit interaction for phonon absorption in this system are considered.Proceedings of ICPS-26, Edinburgh, 2002Mesoscale and Nanoscale PhysicsProbing two-subband systems in a quantizing magnetic field with non-equilibrium phononstext