Transport properties of As-F-based molecular magnetic tunnel junctions.

By combining the density functional theory with non-equilibrium Green's function method, we theoretically design and investigate the spin-dependent transport properties of two molecular magnetic tunnel junctions (MMTJs) with the AsFNRs embedded in zigzag graphene nanoribbons in parallel and antiparallel spin configurations. The findings reveal that the MMTJs have distinct transport characteristics depending upon the orientations of the AsFNRs. Changing the spin configurations leads to two different net spin currents, and the maximal order of the tunneling magnetoresistance magnitude can reach 10 7 %. In addition, a negative differential resistance (NDR) effect is found in our MMTJs. Our findings provide suitable candidates of MMTJs for the future spintronic devices. • We study spin-dependent transport in molecular magnetic tunnel junctions (MMTJs) with AsFNRs. • It shows that MMTJs have distinct transport properties depending on the orientations of AsFNRs. • Changing spin configurations leads to different spin currents, with maximal tunneling magnetoresistance being 107%. • The negative differential resistance effect is found in our MMTJs. • Our findings provide suitable candidates of MMTJs for future spintronic devices. [ABSTRACT FROM AUTHOR]