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MA: Fachverband Magnetismus

MA 42: Posters Magnetism I

MA 42.57: Poster

Mittwoch, 18. März 2020, 15:00–18:00, P3

All-Optical Magnetoelectric Memory — •Jakub Vít¹, Alexej Pashkin², Vilmos Kocsis³, Yasujiro Taguchi⁴, István Kézsmárki⁵, and Sándor Bordács¹ — ¹Budapest University of Technology, Hungary — ²HZDR Dresden, Germany — ³IFW Dresden, Germany — ⁴RIKEN, Japan — ⁵Uni Augsburg, Germany

We demonstrated feasibility of magnetoelectric domain selection by the intense electromagnetic radiation of the FELBE Free Electron Laser. Our experiments showed that among the two magnetic domains, one can be selected in a LiCoPO₄ single crystal cooled from the paramagnetic to the antiferromagnetic phase while it was irradiated by the FELBE. The FELBE was the most efficient when 1) its frequency was tuned close to the ME mode at 1.35 THz, 2) the cooling rate was low, and 3) the FEL power was the maximum. In this poster, I discuss possible mechanisms causing domain imbalance.