Berlin 2024 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 19: Surface Magnetism
MA 19.5: Vortrag
Dienstag, 19. März 2024, 10:30–10:45, EB 407
Ab-initio exploration of complex magnetism of frustrated Mn films on Ag(111) surface — •Selcuk Sözeri1,2, Nihad AbuAwwad2,1, Amal Aldarawsheh2,1, and Samir Lounis1,2 — 1Faculty of Physics, University of Duisburg-Essen and CENIDE, 47053 Duisburg, Germany — 2Peter Grünberg Institut and Institute for Advanced Simulations, Forschungszentrum Jülich & JARA, 52425 Jülich, Germany
Utilizing ab-initio simulations we explore the complex magnetism emerging in antiferromagnetic Mn films deposited on Ag(111) surface. While the associated triangular lattice is prone to magnetic frustration, contradictory behaviors were reported theoretically [1,2,3] and experimentally [4]. We use the full-potential relativistic Korringa-Kohn-Rostoker Green function method to extract the magnetic exchange interaction tensors for one and two Mn monolayers grown on Ag(111). Notably, we find the free-standing Mn layer to host a spin spiraling state as the ground state, while the hybridization with the electronic states of Ag promotes the Néel state to be the lowest in energy in agreement with [4]. We extract the magnetic phase diagrams and highlight the impact of both long-range Heisenberg exchange and Dzyaloshinskii-Moriya interactions.
– Project funded by DFG (SPP 2137: LO 1659/8-1).
– [1] P. Kurz, PhD-Thesis @ RWTH-Aachen University (2000); [2] Heinze et al., Appl. Phys. A 75, 25 (2002);
[2] B.R. Malonda-Boungou, et al., Comp. Cond. Mat. 16. e00368 (2019);
[3] C.L. Gao, et al., PRL 101, 267205 (2008).
Keywords: DFT density functional theory; KKR; ab initio; complex magnetism; surface