从紧束缚模型的理论推导看多重铁性
Multiferroics seen from theoretic derivation of a tight binding model
摘要：
一种是提出了一些格点模型，但理论推导还没有找到，相关效应的重要性还有待强调。从狄拉克方程的非相对论性哈密顿量出发，详细推导了紧束缚模型。我们发现铁磁性和铁电性都来自于电子之间的关联效应，并且由于自旋轨道相互作用，磁序和电序之间存在强耦合。
英文摘要：
One presented some lattice models, while the theoretic derivation has not been found, and the importance of correlation effects has to be emphasized. On the basis of the non-relativistic Hamiltonian from the Dirac equation, we derive in detail a tight binding model. We find that both ferromagnetism and ferroelectricity are from the correlation effect between electrons, and magnetic and electric orders are strongly coupled due to the spin-orbit interaction.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
