Coulomb and exchange scattering amplitudes from spin dependent residual resistivities in Fe and Ni hosts
Coulomb and exchange scattering amplitudes from spin dependent residual resistivities in Fe and Ni hosts
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DOI：
10.1063/1.324718
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发表时间：
1978-03
影响因子：
3.2
通讯作者：
M. Stearns
中科院分区：
文献类型：
--
作者：
M. Stearns
分析了 Fe 和 Ni 基三元合金中大量溶质原子的自旋相关残余电阻率的三个主要来源。 1. 杂质电荷（或体积）扰动引起的库仑散射。发现该振幅与铜基合金的振幅相似。 2. 溶质原子的局部矩扰动引起的散射。发现电势和交换幅度都与自旋相关，并且对于 Fe 和 Ni 主体来说每 μB 大约相同。 3. 溶质原子周围主体中更广泛的矩扰动。这种扰动的形状取决于直接库仑交换效应还是杂交效应占主导地位。在镍中，通常杂交效应占主导地位，并主要产生负面的宿主扰动。在 Fe 中，库仑交换占主导地位，主体扰动的形状取决于与溶质原子连接的流动 d 类电子的数量。
The spin dependent residual resistivities for a large number of solute atoms in Fe and Ni based ternary alloys are analyzed as arising from three main sources. 1. Coulomb scattering from the impurity charge (or volume) perturbation. This amplitude is found to be similar to that for Cu based alloys. 2. Scattering from a localized moment perturbation at the solute atom. Both a potential and exchange amplitude are found to be spin‐dependent and about the same per μB for Fe and Ni hosts. 3. A more widespread moment perturbation in the host surrounding the solute atom. The shape of this perturbation depends upon whether direct Coulomb exchange or hybridization effects dominate. In Ni, usually hybridization effects dominate and give predominately negative host perturbations. In Fe, Coulomb exchange dominates and the shape of the host perturbation depends upon the number of itinerant d‐like electrons connected with the solute atom.