Berlin 2018 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 43: Magnetic textures I
MA 43.4: Vortrag
Donnerstag, 15. März 2018, 10:15–10:30, EB 407
Structure and magnetism of an hydrogenated Fe monolayer on Ir(111) — •Aurore Finco1, Pin-Jui Hsu1,2, André Kubetzka1, Kirsten von Bergmann1, and Roland Wiesendanger1 — 1University of Hamburg, Germany — 2National Tsing Hua University, Hsinchu, Taiwan
The incorporation of H atoms in a Fe bilayer on Ir(111) affects significantly its magnetic state. In particular, it was found that a skyrmionic phase appears when a magnetic field is applied [1].
H atoms can also be used to modify the monolayer Fe on Ir(111). Depending on the amount of hydrogen dosed, two different phases can form. One exhibits a hexagonal superstructure whereas the other one is roughly square. Spin-polarized scanning tunneling microscopy measurements reveal that these hydrogenated structures show complex nanometer-scale magnetic states which are different from the nanoskyrmion lattices found in the pristine Fe monolayer on Ir(111)[2,3]. This work thus provides a further example how to tune a non-collinear magnetic system by hydrogenation.
[1] Hsu et al, arxiv 1711.06784.
[2] Heinze et al, Nature Physics, 7, 713 (2011).
[3] von Bergmann et al, Nano Letters, 15, 3280 (2015).