2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/230766We show that a diamond shaped periodic network, recently proposed as a model of a spin filter (A. Aharony {\em et al.} \cite{aharon08}) is capable of behaving as a p-type or an n-type semiconductor depending on a suitable choice of the on-site potentials of the atoms occupying the vertices of the lattice, and the strength of the magnetic flux threading each plaquette of the network. A detailed study of the density of states of an infinite network is made together with the conductance of finite sized system to establish the idea.4 pages, 7 figuresMesoscale and Nanoscale PhysicsMaterials Sciencetext