中文摘要：

利用二次量子化方法研究了由相同面心立方结构（100）材料构成的铁磁性双层薄膜，重点讨论了界面交换作用在铁磁性界面交换作用（JAB〉0）和反铁磁性界面交换作用（JAB〈0）时对体系体模的影响．结果表明，界面交换作用对奇数体模没有影响，偶数体模的能量随界面交换作用的变化遵循一定的规律：当JAB〉0时，随着界面交换作用的增大，偶数体模的激发能在不断增大；当JAB〈0时，随着界面交换作用的减小，偶数体模的激发能在不断减小．

英文摘要：

Ferromagnetic bilayers with face-centered cubic （100） were studied by using a second quantization approach. Particularly the influence of ferromagnetic interface exchange interaction （JAB 〉 0） and anti-ferromagnetic interface exchange interaction （JAB 〈 0） on the bulk modes was discussed. It is shown that interface exchange interaction will not change the excitation energy of odd bulk modes; the excitation energy of even bulk modes has a cention regulation with the variation of interface exchange interaction： when JAB 〉 0, the excitation energy of even bulk modes increases with the increase of interface exchange interaction; when JAB 〈 0, the excitation energy of even bulk modes decreases with the decrease of interface exchange interaction.