THEORY OF INELASTIC NEUTRON SCATTERING IN NEARLY FERROMAGNETIC METALS.
THEORY OF INELASTIC NEUTRON SCATTERING IN NEARLY FERROMAGNETIC METALS.
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近铁磁性金属中的非弹性中子散射理论。
DOI：
10.1088/0370-1328/91/1/316
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发表时间：
1967
期刊：
影响因子：
--
通讯作者：
S. Doniach
中科院分区：
文献类型：
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作者：
S. Doniach
根据 Izuyama、Kim 和 Kubo 的随机相位近似公式，讨论了金属单能带流动电子模型中零温度下的顺磁中子散射问题。电子气的相关广义磁化率。该公式以有效质量近似进行数值计算，并与局域自旋顺磁体的简单求和规则进行定性比较。该公式也适用于预测固定散射角下的中子散射截面。除了原子形状因素产生的散射强度之外，巡回特征还产生散射强度的降低。讨论了中子散射在测定钯中d带空穴的未重整化带质量中的应用，并与Cable和Wollan在钯上的散射实验进行了比较。建议在足够小的角度下可以观察到顺磁散射。
Paramagnetic neutron scattering at zero temperature in a one-band itinerant electron model of a metal is discussed in terms of the random-phase approximation formula of Izuyama, Kim and Kubo for the q, ? dependent generalized susceptibility of an electron gas. The formula is evaluated numerically in the effective mass approximation, and qualitative comparison made with simple sum rules for a localized spin paramagnet. The formula is also applied to predict neutron scattering cross sections at fixed scattering angle. The itinerant character produces a reduction in the scattering intensity additional to that produced by the atomic form factor. The use of neutron scattering in the determination of the unrenormalized band mass of the d-band holes in palladium is discussed Comparison is made with experiments of Cable and Wollan for scattering on palladium. It is suggested that the paramagnetic scattering should be observable at sufficiently small angles.