Modulating spintronic properties of Nitrogen passivated borophene nanoribbons

Abstract

We investigate the stability, magnetic, and transport features of pristine zigzag borophene nanoribbons (ZBNRs) and those edge-passivated by H and N atoms. The calculations were performed using non-equilibrium Green’s function and density functional theory approach. Our main focus is to study the transport properties of N-passivated ZBNRs. The results show that the stability of the nanoribbon increases by passivating the edges. The magnetic features of borophene nanoribbon are affected by the hanging bond of the edges. Hydrogenation can remove the magnetism on the edge, but the passivation by N atoms can increase the magnetic properties. It is revealed that the Nitrogenation causes the negative differential resistance (NDR) phenomenon and 65% spin filtering effect. The estimated Curie temperature for N atom passivated on both edges of ZBNR (NN-ZBNR) is higher than 6000 K, indicating that NN-ZBNR may be good room-temperature ferromagnetic material for spintronic applications in the future.