Charge Injection Barrier at the Metal/Oil-Paper Insulated Interface Based on First Principles - Chen, Yuqi; Liu, Dayou; Maharana, Mrutyunjay; Zhou, Jiacheng; Wu, Kai; Sanchez, Ricardo Albarracin; Baruah, Niharika (Ieee Transactions On Dielectrics And Electrical Insulation, 2025)