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Non-collinear coupling between magnetic adatoms in carbon nanotubes

A. T. Costa·C. G. Rocha·M. S. Ferreira
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Abstract

The long range character of the exchange coupling between localized magnetic moments indirectly mediated by the conduction electrons of metallic hosts often plays a significant role in determining the magnetic order of low-dimensional structures. In addition to this indirect coupling, here we show that the direct exchange interaction that arises when the moments are not too far apart may induce a non-collinear magnetic order that cannot be characterized by a Heisenberg-like interaction between the magnetic moments. We argue that this effect can be manipulated to control the magnetization alignment of magnetic dimers adsorbed to the walls of carbon nanotubes.

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A. T. Costa, C. G. Rocha, M. S. Ferreira. 2007-02-28. Non-collinear coupling between magnetic adatoms in carbon nanotubes. https://doi.org/10.1103/physrevb.76.085401

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