2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/136699We report on the fabrication and transport studies of a single-layer graphene p-n junction. Carrier type and density in two adjacent regions are individually controlled by electrostatic gating using a local top gate and a global back gate. A functionalized Al203 oxide that adheres to graphene and does not significantly affect its electronic properties is described. Measurements in the quantum Hall regime reveal new plateaus of two-terminal conductance across the junction at 1 and 3/2 times the quantum of conductance, e2/h, consistent with theory.related papers at http://marcuslab.harvard.edu. Fixed a factor of 2 in Eq. 1 and 2Mesoscale and Nanoscale PhysicsMaterials Sciencetext