DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2018 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 67: Skyrmions III (joint session MA/TT/KFM)

TT 67.11: Vortrag

Mittwoch, 14. März 2018, 17:30–17:45, EB 301

Isolated skyrmions with vanishing anisotropy in Co/Ru(0001) — •Marie Böttcher1,2, Marie Hervé3, Jairo Sinova1,4, Wulf Wulfhekel3, and Bertrand Dupé11Johannes Gutenberg-Universität Mainz, Mainz, Germany — 2Graduate School Materials Science in Mainz, Mainz, Germany — 3Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany — 4Academy of Sciences of the Czech Republic, Praha, Czech Republic

Magnetic skyrmions are localized and topologically stabilized non-collinear spin structures. They offer attractive perspectives for future spintronics applications, because they can be manipulated at lower current densities than domain walls [1]. The stabilization of skyrmions is usually attributed to a large Dzyaloshinskii-Moriya interaction (DMI). Here, we show that a strong DMI is not a necessary condition to obtain skyrmions in ultra-thin films. Co/Ru(0001) possesses a spin spiral ground state, although the DMI is weak. We attribute the stability of this spin texture to the simultaneous vanishing of anisotropy [2]. We determine the B-T phase diagram for this system using Monte Carlo simulations and show the magnetic field dependence of isolated skyrmions at magnetic fields with a ferromagnetic ground state. [1] A. Fert, et al. Nature Nano. 8, 152 (2013). [2] M. Hervé et al. arXiv:1707.08519 (2017)

100% | Mobil-Ansicht | English Version | Kontakt/Impressum/Datenschutz
DPG-Physik > DPG-Verhandlungen > 2018 > Berlin