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Magnetic interactions of supported magnetic clusters

Anders Bergman·Lars Nordstrom·Angela Burlamaqui Klautau·Sonia Frota-Pessoa·Olle Eriksson
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Abstract

It is demonstrated that the magnetic interactions can be drastically different for nano-sized systems compared to those of bulk or surfaces. Using a real-space formalism we have developed a method to calculate non-collinear magnetization structures and hence exchange interactions. Our results for magnetic clusters supported on a Cu(111) surface show that the magnetic ordering as a rule is non-collinear and can not always be described using a simple Heisenberg Hamiltonian. We suggest that ab initio calculations allowing for non-collinear coupling between atomic spins is the best tool for analyzing nano-sized magnets.

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Anders Bergman, Lars Nordstrom, Angela Burlamaqui Klautau, Sonia Frota-Pessoa, Olle Eriksson. 2005-11-22. Magnetic interactions of supported magnetic clusters. https://arxiv.org/abs/cond-mat/0511542

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