Magnetic interactions of supported magnetic clusters

Details Magnetic interactions of supported magnetic clusters Magnetic interactions of supported magnetic clusters

2005-11-22

arxiv.org/abs/cond-mat/0511542v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

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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