Berlin 2024 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 46: Poster II

MA 46.77: Poster

Donnerstag, 21. März 2024, 15:00–18:00, Poster C

Laser-induced generation of magnetic fields on an ultrafast timescale — •Hannah Bendin, Benjamin Schwager, and Jamal Berakdar — Martin-Luther-Universität Halle-Wittenberg

Enabling ultrafast switching of magnetic moments on a nanoscopic scale is an important step on the path to minimization of electronic devices. Therefore, finding new ways of generating the respective magnetic fields is essential. In this project, the possibility of utilizing endohedral fullerenes for those purposes is investigated. Fullerenes possess superatom molecular orbitals (SAMOs). For the buckminsterfullerene, those diffuse excited states are similar in structure to hydrogen orbitals while being on a nanometer scale. Using an optical vortex beam to excite electrons and transfer spin as well as orbital angular momentum, charge currents can be generated in the SAMOs. The induced magnetic field inside the cage of the fullerene and the spin manipulation of enclosed atoms are investigated.

Keywords: magnetic field generation; fullerenes; vortex beams; molecular physics