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Non-collinear magnetic Structures at the Nanoscale

Dr. Elena VEDMEDENKO - Institute for Applied Physics - University of Hamburg


Non-collinear magnetic Structures at the Nanoscale

The type of magnetic ordering determines macroscopic physical properties of a system. Especially interesting phenomena appear in systems with noncollinear spin structures as the noncollinearity strongly influences the dynamical and hysteretic behavior of a magnet. For example, noncollinear spin ordering at the interface between ferro- and antiferromagnetic materials has been proposed to play a key role for the exchange-bias effect. The noncollinear magnetism often arises in antiferromagnetic systems with competing ferro- and antiferromagnetic interactions, in magnets with pure antiferromagnetic or dipolar interactions on frustrated lattices and in domain walls of otherwise collinear systems. The peculiarities of magnetic order in these three principal cases will be discussed on examples of complex mosaic structure in Fe/Ir(111) nanoislands, hierarchical ordering in rare-earth based quasicrystals and magnetic domain walls in Fe/W(001) monolayers.

Poster