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Calculations of ground-state spin magnetizations in Cu-coated Fe nanotubes

机译:铜包覆铁纳米管中基态自旋磁化强度的计算

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By using a degenerated d+s band model in the Hartree-Fock approximation, we calculate the ground-state spin local magnetic moments of Fe nanotubes with and without Cu coating. We focus on the variations of the spin local magnetic moments in the nanotube and in the coating effects. We find that the effect of the Cu coating is to change slightly the spin local magnetic moments of the Fe nanotube and to decrease the average spin local magnetic moment. In addition we find that the Cu sites develop a ferromagnetic polarization in the d electrons and an antiferromagnetic polarization in the s electrons. The total polarization in the Cu sites presents an oscillation with the distance to the center of the nanotube. (C) 2005 Elsevier Ltd. All rights reserved.
机译:通过在Hartree-Fock近似中使用简并的​​d + s带模型,我们计算了具有和不具有Cu涂层的Fe纳米管的基态自旋局部磁矩。我们关注纳米管中自旋局部磁矩的变化以及涂层效应。我们发现,铜涂层的作用是稍微改变铁纳米管的自旋局部磁矩,并降低平均自旋局部磁矩。此外,我们发现Cu位置在d电子中形成铁磁极化,在s电子中形成反铁磁极化。 Cu位点中的总极化在距纳米管中心的距离处呈现振荡。 (C)2005 Elsevier Ltd.保留所有权利。

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