2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/167464We report electrically detected magnetic resonance of phosphorus donors in a silicon field-effect transistor. An on-chip transmission line is used to generate the oscillating magnetic field allowing broadband operation. At milli-kelvin temperatures, continuous wave spectra were obtained up to 40 GHz, using both magnetic field and microwave frequency modulation. The spectra reveal the hyperfine-split electron spin resonances characteristic for Si:P and a central feature which displays the fingerprint of spin-spin scattering in the two-dimensional electron gas.4 pages, 4 figures, submitted to APLMaterials ScienceMesoscale and Nanoscale Physicstext