The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 23 3 2023 11 22 Spin transfer torque in graphene-based domain walls Spin transfer torque in graphene-based domain walls 47 52 3432 10.47176/ijpr.22.3.11599 FA Zeinab Rashidian Faculty of Science, Department of Physics, Lorestan University, Khoramabad 68151-44316, Iran Khadije Jahanbani Department of Materials Science and Engineering, School of Engineering, Meybod University, P.O.Box 89616-99557, Yazd, Iran Journal Article 2022 11 09 Scattering matrix formalism is employed to calculate the spin transfer torque in a graphene-based domain wall (DW) in the ballistic regime. We have suggested a new method for manipulating the direction of domain wall motion by both the length of the DW and magnetic barrier that is the ratio of induced exchange field to Fermi energy. It has also shown that spin current density gives us more insight into the transmission of spin-polarized electrons. Scattering matrix formalism is employed to calculate the spin transfer torque in a graphene-based domain wall (DW) in the ballistic regime. We have suggested a new method for manipulating the direction of domain wall motion by both the length of the DW and magnetic barrier that is the ratio of induced exchange field to Fermi energy. It has also shown that spin current density gives us more insight into the transmission of spin-polarized electrons. https://ijpr.iut.ac.ir/article_3432_72007983849f4fcb0ad565439834756b.pdf