Charge control in diamond photoemission via graphitic microchannelsRemoveRoberto Flammini, Matteo Mastellone, Eleonora Bolli, Giorgia Sementilli, Rahul Parmar, Matteo Amati, Luca Gregoratti, Alessandro Bellucci, and Daniele M. TrucchiPhys. Rev. Applied 26, 054006 (2026)