2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22814A ballistic ring in presence of collinear dc and high-frequency electric fields is considered. A possibility is demonstrated of the system switching between two states by changing the strength of dc and/or high-frequency field. It leads to hysteretic behavior of the ring dc dipole moment as a function of the dc electric field.3 pages, 1 figureMaterials Sciencetext