材料期刊网

Based on a theoretical model proposed for quasi-one-dimensional organic polymer ferromagnets, the effects of electron-electron interaction on the ferromagnetic slate are studied. Allowing for full lattice relaxation, the system is optimized by a set of self-consistent iterative equations. The results of the calculation indicate that larger on-site electron-electron repulsive interactions will make the ferromagnetic ground state of the system more stable. It is also found that the inter-site electron-electron interaction cause a charge density distribution along the main chain and consequently weakens the stability of the ferromagnetic ground state.