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考虑由两种不同的Heisenberg及铁磁膜组成的磁性超晶格结构,通过线性化的Hol-stein-Primakoff变换和Green函数理论,计算了自旋波色散关系。有趣的是,视一个超原胞内原子平面数为奇或偶,结果有差异,意味着宏观性质也会有差异。By means of linearized Holstein-Primakoff transformation and Green function theory, the spin wave dispersion curves are obtained for superlattices consisting of two kinds of Heisenberg antiferromagnetic layers. It is interesting that the results are different in cases that a super-cell contains odd or even number of atomic planes, implying differences in physical properties.
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