在线阅读 --自然科学版 1999年3期《电子相互作用对准一维有机铁磁体的铁磁基态的影响》
电子相互作用对准一维有机铁磁体的铁磁基态的影响--[在线阅读]
郭新力1, 高俊山2
1. 武汉工业学院基础课部, 湖北 武汉 430022;
2. 华北航天工业学院, 河北 廊坊 065000
起止页码: 343--346页
DOI:
摘要
提出了一种基于极化子的准一维有机高聚物铁磁体模型。在这种模型中,依靠极化子而不是有机自由基来提供未配对电子。利用PeierlsHubbard哈密顿量,考虑强电声耦合,允许完全的格子松驰过程,建立了一套自洽迭代方程,计算了格点上的电子相互作用和格点间的电子相互作用对有机铁磁体的铁磁基态的影响

The Effects of Electron-electron Interactions on the Ferromagnetic Ground State in Quasi- 1D Organic Polaronic Ferromagnet
GUO Xin-li1, GAO Jun-shan2
1. Wuhan Institute of food Engineering, Wuhan 430022, China;
2. North China Institute of Astronautic Engineering, Langfang 065000, China
Abstract:
A peierls-extended Hubbard model is used to study the effects of electron- electron intaractions on the possible ferromagnetic ground state in the polaronic ferromagnet,in which the unpaired spins are derived from polarons instead of side free- radicals. Considering the strong electron-phonon coupling and allowing for full lattice relaxation, the system is optimized by a set of self- consistent iterative equations. T he results of calculation indicate that the possible ferromagnetic ground state of the system will be influenced dramatically by the on-site and inter-site electron-electron interaction.

收稿日期: 1999-3-15
基金项目:

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