Symmetry and energy spectrum of high-nuclearity spin clusters
Symmetry and energy spectrum of high-nuclearity spin clusters
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DOI：
10.1103/physrevb.61.6138
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发表时间：
2000-03
影响因子：
3.7
通讯作者：
O. Waldmann
中科院分区：
文献类型：
--
作者：
O. Waldmann
给出了一个通用而有效的程序，它使我们能够减少计算高核度自旋团簇能级的计算量。该方法包括利用自旋哈密顿量关于自旋位置交换的不变性对哈密顿矩阵进行块分解。它可以应用于任意的自旋哈密顿量。为了展示它在处理不同的自旋哈密顿项和对称群时的灵活性，我们讨论了它在几个模型团簇中的应用。
A general and efficient procedure is presented, which allows us to reduce the computational efforts for the calculation of the energy levels of high-nuclearity spin clusters. The method consists of block factorizing the Hamiltonian matrix using the invariance of the spin Hamiltonian with regard to interchanges of spin sites. It can be applied to any arbitrary spin Hamiltonian. In order to demonstrate the flexibility in handling different spin Hamiltonian terms and symmetry groups, its application to several model clusters is discussed.