Sahu S.Panda S.K.Rout G.C.2025-02-172018http://dx.doi.org/10.1007/s10948-017-4405-xhttps://idr.iitbbs.ac.in/handle/2008/1848We address here a tight-binding model study of the frequency-dependent antiferromagnetic spin susceptibility for the graphene systems. The Hamiltonian consists of electron hopping up to the third-nearest-neighbors, substrate and impurity effects in presence of electron-electron interactions at A and B sub-lattices. To calculate susceptibility, we evaluate the two-particle electron Green�s function by using Zubarev�s Green�s function technique. The frequency-dependent antiferromagnetic susceptibility of the system is computed numerically by taking 1000 X 1000 grid points of the electron momentum. The susceptibility displays a sharp peak at the neutron momentum transfer energy at low energies and another higher-energy peak associated with the substrate-induced gap. The evolution of these two peaks are investigated by varying neutron wave vector, Coulomb correlation energy, substrate-induced gap, electron hopping integrals and A- and B-site electron-doping concentrations. � 2017, Springer Science+Business Media, LLC.enCoulomb interactionDynamic spin antiferromagnetic susceptibilityGrapheneArticle