Berlin 2024 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 11: Focus Session: Spins on Surfaces studied by Atomic Scale Spectroscopies II
O 11.6: Vortrag
Montag, 18. März 2024, 16:30–16:45, MA 004
Yu-Shiba-Rusinov bands in a self-assembled kagome lattice of magnetic molecules — •Laëtitia Farinacci1, Gaël Reecht1, Felix von Oppen2, and Katharina J. Franke1 — 1Fachbereich Physik, Freie Universität Berlin, Germany — 2Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, Germany
The kagome lattice features both a flat-band and a Dirac cone, which makes it of particular interest for electronic correlations and relativistic effects. Moreover, if anti-ferromagnetic nearest-neighbour coupling takes place, its geometry ensures magnetic frustration. This further broadens the range of physical phenomena that a kagome lattice can host.
However, it is challenging to realize an ideal two-dimensional lattice as interlayer coupling or interactions with a solid-state support may suppress the correlations. Here, we initiate a study a kagome lattice hosting unpaired electron spins on a superconductor. Using molecular self-assembly we show that the deposition of Fe-porphine-chloride molecules on a Pb(111) surface can lead to the formation of a kagome lattice in 2D molecular islands, and also of smaller units that correspond to kagome precursors. Each FeP molecule induces a magnetic bound state, called Yu-Shiba-Rusinov (YSR) state and we show that these hybridize in the kagome precursors and lead to YSR bands in large islands.
Keywords: Yu-Shiba-Rusinov band; Kagome; Scanning tunneling microscopy