Berlin 2018 – wissenschaftliches Programm
O 5.4: Vortrag
Montag, 12. März 2018, 11:30–11:45, MA 042
Novel 2D Spinterface: Co-TPT/T4PT networks on metallic surfaces — •Lu Lyu1, Benito Arnoldi1, Sina Mousavion1, Sebastian Becker1,2, Johannes Stöckl1, Maniraj Mahalingam1, Benjamin Stadtmüller1,3, and Martin Aeschlimann1 — 1Department of Physics and Research Center OPTIMAS, TU Kaiserslautern — 2Department of Chemistry, TU Kaiserslautern — 3Graduate School Materials Science in Mainz, Kaiserslautern
Metal-organic networks are highly flexible hetero-structures consisting of atoms which are linked by organic molecules. Most interestingly, the lateral hybridization between the metallic centers and the organic linker molecules can mediate an indirect coupling between the metallic centers which can lead to collective spin phenomena in these systems. Here, we investigated the geometric and spin-dependent electronic properties of various cobalt based metal-organic networks on cobalt and copper surfaces using LEED, LT-STM and spin-resolved ARPES. As linker molecules, we have chosen the organic molecules TPT (2,4,6-triphenyl-1,3,5-triazine) and T4PT (2,4,6-tri(4-phenyl)-1,3,5-triazine). Upon deposition of these molecules on bare Cu(111) and on thin Co film on Cu(111), metal-organic networks instantaneously formed due to the large amount of free surface adatoms. The Cu-TPT network on Cu(111) reveals single atom cavities which can be filled by Co atoms in an additional deposition step. A comparison between our structural and spin-dependent spectroscopic data will allow us to gain insight into the interactions between the metal atoms and the organic molecules in these networks.