Inelastic Neutron Scattering Intensities of Ferromagnetic Cluster Spin Waves
Inelastic Neutron Scattering Intensities of Ferromagnetic Cluster Spin Waves
复制标题
铁磁团簇自旋波的非弹性中子散射强度
DOI:
10.1002/ejic.201801170
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发表时间:
2019
影响因子:
2.3
通讯作者:
Oliver Waldmann
中科院分区:
文献类型:
--
作者:
Krunoslav Prša;Oliver Waldmann
Inelastic neutron scattering (INS) is the key method for studying magnetic spectra. For ferromagnetic molecular nanomagnets the ferromagnetic cluster spin wave theory (FCSWT) exactly describes the low‐energy excitations from the ferromagnetic ground state. We provide a procedure starting from these molecular spin wave modes and ending with the experimentally observable INS spectra. The formulas for powder and single‐crystal spectra of isotropic and anisotropic ferromagnetic molecules are given. The INS interference pattern can be written in terms of “basis functions” fixed by the molecular geometry. We argue that this decomposition explicates the INS data when the spin wave modes are known and, vice versa, suggests a method to directly determine the quantum wavefunctions of the spin wave excitations based on the INS interference pattern. The calculation of INS observables is exemplified on three molecules: the Mn7disc, the Mn10supertetrahedron, and the Mn6single molecule magnet.
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DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
A. Furrer;H. Güdel
通讯作者:
H. Güdel
影响因子:
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作者:
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通讯作者:
Santini, Paolo
影响因子:
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影响因子:
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通讯作者:
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影响因子:
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