2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/170471Gap opening in graphene is usually discussed in terms of a semiconducting-like spectrum, where the appearance of a finite gap at the Dirac point is accompanied by a finite mass for the fermions. In this Letter we propose a gap scenario from graphene which preserves the massless characters of the carriers. This approach explains recent spectroscopic measurements carried out in epitaxially-grown graphene, ranging from photoemission to optical transmission.Mesoscale and Nanoscale PhysicsMaterials Sciencetext