Abstract
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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Ruiz-Díaz, P., Dorantes-Davila, J. & Pastor, G. Onset of non-collinear magnetism in small Fe clusters. Eur. Phys. J. D 52, 175–178 (2009). https://doi.org/10.1140/epjd/e2008-00254-4
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DOI: https://doi.org/10.1140/epjd/e2008-00254-4