准一维有机高聚物铁磁体自旋动力学研究

On the Spin Dynamics of Quasi One Dimensional Organic Ferromagnets

对准一维有机高聚物铁磁体中的自旋动力学进行了研究．考虑了一维体系中强的电子－声子和电子－电子相互作用，允许完全的格子松驰，建立了一套自洽迭代方程来研究围绕侧基的π电子自旋极化云．结果发现该自旋极化云的强度将随电子－电子相互作用的增强而增强，其扩展范围将随电声耦合的增强而迅速减弱．

Based on a model developed for quasi one dimensional organic ferromagnets, the spin dynamics of the system is studied. With the strong electron phonon coupling and electron electron interaction taken into consideration and allowing for full lattice relaxation, a set of self consistent equations is formulated to study the spin polarization cloud of the π electrons around the side radicals. It has been found that the intensity of the cloud will increase with the increase of the electron electron interaction, and the region will become smaller with the strengthening of the electron phonon coupling.