Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 64: Poster 1
MA 64.45: Poster
Freitag, 24. März 2017, 09:30–13:00, P2-EG
non-collinear magnetism of mn nanostructures adsorbed on nobel metal (111) surfaces — •ramon cardias1,2, manoel bezerra-neto1, marcelo ribeiro1, anders bergman2, angela klautau1, and olle eriksson2 — 1Universidade Federal do Pará — 2Uppsala University
The magnetic properties of Mn nanostructures adsorbed on Ag(111) and Au(111) surfaces have been investigated by means of first principles calculations allowing for noncollinear coupling between atomic spins. Our calculations of interatomic exchange interactions reveal the strong exchange interactions between Mn atoms on Ag(111), which rules the magnetic ordering for Mn clusters on this substrate. For Mn nanostructures on Au(111), the effect of spin-orbit coupling leads to the possibility of realizing complex noncollinear magnetic structures such as ring-like antiferromagnetic one, and other exotic three-dimensional magnetic structures. The effect of the structural relaxation is also investigated, showing bond-substrate distance dependent for the exchange interactions. In the end, we reveal the Dzyaloshinskii-Moriya interaction for the Mn monolayer on both surface and for some nanoclusters, studying the influence of this interaction.