OICC Press Journal of Theoretical and Applied Physics 2251-7235 20 2 2026 04 30 Rashba Coupling Assisted Negative Differential Conductance in Graphene Based Quantum Antidot Nano-Ribbon 10.57647/jtap.2026.2002.10 EN Kobra Hasanirokh Department of Physics, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran Neda Shahabi Department of Physics, Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran https://orcid.org/0000-0001-6424-5988 Arash Phirouznia Condensed Matter Computational Research Lab. Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran Journal Article 2026 04 30 Characteristic quantum transport features of a graphene-based quantum antidot structure which has been considered between two semi-infinite zig-zag graphene leads is investigated theoretically. The RPA-Keldysh method has been employed to capture Colomb interaction between the carriers in the presence of the Rashba interaction. It has been realized that the Colomb interaction results in negative differential conductance (NDC) which significantly depends on the strength of the Rashba coupling.