Regensburg 2019 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 51: Magnetism Poster B
MA 51.43: Poster
Donnerstag, 4. April 2019, 15:00–18:00, Poster C
Spin-polarized ARPES studies of copper-based molecular spinterfaces — •David Janas, Henning Sturmeit, Giovanni Zamborlini, Stefano Ponzoni, and Mirko Cinchetti — Experimentelle Physik VI, TU Dortmund, Otto-Hahn-Straße 4, 44227 Dortmund, Germany
Spin-resolved angle-resolved photoelectron spectroscopy (spin-ARPES) is a powerful method to study the spin-dependent properties of molecular spinterfaces [1]. In a recent work [2] it was reported that layered structures of C60 deposited on metallic thin films show emerging ferromagnetic properties even on dia- or paramagnetic metals. Although the physical origin of the ferromagnetic order is not yet fully understood, there are strong evidences that the magnetic moment is localized at the metal-organic interface. In order to shed a light on the mechanism leading to these unexpected magnetic properties, we have performed spin-ARPES measurements on different prototypical copper-based interfaces where all the experimental conditions - e.g. metal and molecular film thickness, metal-molecule interaction - can be controlled at the nanoscale level. We will discuss the results on the different systems and highlight the observed similarities and differences.
[1] M. Cinchetti, V. A. Dediu, and L.E. Hueso, Nature Materials 16, 507 (2017)
[2] F. Al MaMari et al., Nature 524, 69 (2015)