Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 3: Magnetic Textures: Statics and experimental imaging

MA 3.11: Vortrag

Montag, 20. März 2017, 12:15–12:30, HSZ 101

Non collinear magnetism in a Co monolayer probed by spin resolved scanning tunnelling microscopy — •Marie Hervé¹, Bertrand Dupé², Rafael Lopez³, Marie Böttcher², Maximiliano D. Martins³, Timofey Balashov¹, Lukas Gerhard¹, Christian Gorenflo¹, Jairo Sinova², and Wulf Wulfhekel¹ — ¹Physikalisches Institut, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany — ²Institut für Physik, Johannes Gutenberg Universität Mainz, 55128 Mainz, Germany — ³Centro de Desenvolvimento da Tecnologia Nuclear Serviço de Nanotecnologia Laboratório de Nanoscopia, Belo Horizonte, Brazil

In magnetic thin films the Heinsenberg exchange interaction often leads to a parallel or antiparallel alignment of neighboring spins in the crystal. When inversion symmetry is broken e.g. by a surface or an interface, the non-collinear Dzyaloshinskii-Moriya interaction competes with the Heisenberg exchange interaction. This competition can lead, in some case, to the stabilization of complex spin textures such as spin spirals or skyrmions. We report here on the characterization of a non-collinear magnetic structure in Co(1 ML)/Ru(0001) with spin polarized STM. A chiral spin spiral of 40 nm periodicity in the 1st monolayer as a ground state is evidence. Under magnetic field isolated skyrmions can be stabilized.