Dresden 2020 – scientific programme
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MA: Fachverband Magnetismus
MA 59: Posters Magnetism III
MA 59.3: Poster
Friday, March 20, 2020, 09:00–12:00, P2/EG
Stability of the skyrmion lattice in Fe1-xCoxSi — •Carolina Burger1, Andreas Bauer1, Alfonso Chacon1, Marco Halder1, Jonas Kindervater1, Sebastian Mühlbauer2, André Heinemann2, and Christian Pfleiderer1 — 1Physik-Department, Technische Universität München, D-85748 Garching, Germany — 2Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, D-85748 Garching, Germany
We report on the magnetization and susceptibility of single-crystal Fe1-xCoxSi, x = 0.5, complemented by small-angle neutron scattering. In small magnetic fields, this compound hosts a hexagonal lattice of topologically non-trivial skyrmions, that may metastably persist down to lowest temperatures when field-cooled. We show that signatures characteristic of the skyrmion lattice survive field values up to the field-polarized regime as well as field inversion. This stability highlights the topological protection of skyrmions allowing to exploit their unique properties, even when being present only in metastable form.