层状亚铁磁体的基态能量

Ground State Energy of Layered Ferrimagnets

从三维各向异性的双子格简立方Ｈｅｉｓｅｎｂｅｒｇ亚铁磁体模型出发，导出了自旋近似下的哈密顿量，采用矩阵格林函数运动方程技术，得到了自旋波的色散关系，并给出了子晶格基态能量的解析表达式数值计算结果表明。

Hamiltonian is derived within linear spin wave approximation for three sublattice Heisenberg ferrimagnetic model The chromatic dispersion relationship of spin wave are obtained using the equation of motion to matrix of green′s function,thus giving the analytic expressions to sublattice ground state energy The calculated results show that δ=J ⊥/J or the ratio of intensities of interlayer coupling to couplign whithin a layer has an important effect on ferrimagnetic properties