Many-spin interactions and spin excitations in Mn 12

Many-spin interactions and spin excitations in Mn 12
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Mn 12 中的多自旋相互作用和自旋激发

DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
Bruce N. Harmon
Bruce N. Harmon
中科院分区：
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文献类型：
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作者：
M. Katsnelson;V. Dobrovitski;Bruce N. Harmon

文献摘要

被引文献

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本文采用8自旋模型哈密顿量，对大自旋团簇Mn_{12}$中的多自旋相互作用进行了深入的研究，并根据实验数据确定了可能的参数。考虑到多自旋激发满意地解释了中子散射峰的位置，EPR测量的结果，和磁化率的温度依赖性。特别是，强Dzyaloshinsky-Morya相互作用被认为是重要的中子散射数据的描述。
In this work, the many-spin interactions taking place in ${mathrm{Mn}}_{12}$ large-spin clusters are extensively studied using the 8-spin model Hamiltonian, for which we determine the possible parameters based on experimental data. Account of the many-spin excitations satisfactorily explains positions of the neutron scattering peaks, results of EPR measurements, and the temperature dependence of magnetic susceptibility. In particular, strong Dzyaloshinsky-Morya interactions are found to be important for description of neutron scattering data.