Spin States of s=1/2 Dimer with Non-Collinear Local Axes Exhibiting C2 Permutation Symmetry

A. Zhuravlev, Y. Pashkevich
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Abstract

Single-ion and exchange anisotropy effects in equal-spin $s^{(1)}=s^{(2)}$ dimeric single molecule magnets exhibiting C2 point group symmetry have been studied. The Hamiltonian which is written in two-spin $4\times 4$ Pauli matrixes representation in the appropriate local coordinates has been used to derive energy levels and eigen spin states. The anomalous variation of the average spin system in dependence of non-collinear misalignment of the local anisotropy axes has been found. Particularly a fully non magnetic state of an $\mathrm{s}=1/2$ spin dimer was predicted.
具有非共线局域轴的s=1/2二聚体具有C2排列对称的自旋态
研究了具有C2点群对称的等自旋$s^{(1)}= $s^{(2)}$二聚体单分子磁体中的单离子和交换各向异性效应。在适当的局部坐标下,用双自旋4 × 4泡利矩阵表示的哈密顿量被用来推导能级和本征自旋态。发现了平均自旋系统的异常变化与局域各向异性轴的非共线错位有关。特别是预测了$\ mathm {s}=1/2$自旋二聚体的完全非磁性态。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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