Dresden 2020 – scientific programme
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O: Fachverband Oberflächenphysik
O 118: Surface Magnetism II (joint session O/MA)
O 118.7: Talk
Friday, March 20, 2020, 12:00–12:15, GER 38
Study of the skyrmion formation on Co monolayers deposited on superconducting Ru(0001) substrate — •Loic Mougel1, Julian Skolaut1, Marie Hervé1,2, Timofey Balashov1, Jasmin Jandke1, Bertrand Dupé3, and Wulf Wulfhekel1 — 1Physikalisches Institut ,KIT, Karlsruhe, Germany — 2Institut des Nanosciences de Paris, CNRS, Sorbonne université, Paris, France — 3Institute of Physics, Johannes Gutenberg-Universität (JGU), Mainz, Allemagne
It has been theoretically proposed in the last years that magnetic skyrmions, when positioned in proximity to a superconductor might host Majorana bound states. These states are predicted to appear in pair of entangled states, as a zero-energy excitation in a superconducting gap. Such states are of great interest for the realization of Topological Quantum Computation.
Recently we demonstrated that it was possible to stabilize skyrmions using low magnetic field, on monolayers of Co deposited on a Ru(0001) surface. By submitting the system to a magnetic field one can create skyrmions that will remain meta-stable in the remanent state. In this communication we report on the preliminary experiments realized on the Co monolayers deposited on the superconducting Ru(0001) surface. We will present the measurements of Ruthenium superconducting gap, as well as the study of the proximity effect that arise at the Ferromagnetic/Superconductor interface, and how the superconducting state can influence the spin-spiral structure.