Onset of non-collinear magnetism in small Fe clusters

被引：0
作者：
P. Ruiz-Díaz
J. Dorantes-Davila
G. M. Pastor
机构：
[1] Instituto de Física,
[2] Universidad Autónoma de San Luis Potosí,undefined
[3] Institut für Theoretische Physik,undefined
[4] Universität Kassel,undefined
来源：
The European Physical Journal D | 2009年 / 52卷
关键词：
36.40.Cg Electronic and magnetic properties of clusters; 75.75.+a Magnetic properties of nanostructures; 75.10.Lp Band and itinerant models;
D O I：
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中图分类号：
学科分类号：
摘要：
The onset of noncollinear magnetism in small FeN clusters is investigated by using a rotational invariant tight-binding Hamiltonian. The ground-state local magnetic moments, magnetic order and average magnetic moments are calculated as a function of the Coulomb exchange integral J. Representative results for Fe3 and Fe5 show that the noncollinear magnetic solutions are the most stable. A variety of qualitatively different self-consistent solutions is obtained as a function of J. This includes magnetic solutions with collinear and noncollinear spin arrangements. Our calculations are compared with previous density-functional results. Extensions and limitations of our work are also pointed out.
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页码：175 / 178
页数：3
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