%0 Journal Article
%A Kraus, Stefan
%A Herman, Alexander
%A Huttmann, Felix
%A Bianchi, Marco
%A Stan, Raluca-Maria
%A Holt, Ann Julie
%A Tsukamoto, Shigeru
%A Rothenbach, Nico
%A Ollefs, Katharina
%A Dreiser, Jan
%A Bischof, Ken
%A Wende, Heiko
%A Hofmann, Philip
%A Atodiresei, Nicolae
%A Michely, Thomas
%T Uniaxially Aligned 1D Sandwich-Molecular Wires: Electronic Structure and Magnetism
%J The journal of physical chemistry  / C
%V 126
%N 6
%@ 1932-7447
%C Washington, DC
%I Soc.
%M FZJ-2022-01290
%P 3140–3150
%D 2022
%X Sandwich-molecular wires consisting of europium and cyclooctatetraene (Cot) were grown in situ on the moiré of graphene with Ir(110). The moiré templates a uniaxial alignment of monolayer EuCot nanowire carpets and multilayer films with the EuCot wire axis along the [001] direction of the Ir substrate. Using angle-resolved photoemission spectroscopy, we investigate the band structure of the wire carpet films. While π-derived bands were not observed experimentally, we find a flat band 1.85 eV below the Fermi energy. Using density-functional theory and X-ray photoelectron spectroscopy and replacing europium through barium in the sandwich-molecular wires, it is concluded that the flat band is derived from Eu 4f states weakly mixed with Eu 5d states and slightly overlapping with Cot π states. X-ray magnetic circular dichroism is employed to characterize the magnetic properties of the EuCot wire carpet films at low temperatures. Clear evidence for an easy-axis magnetization along the wires is found.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000766228300023
%R 10.1021/acs.jpcc.1c10625
%U https://juser.fz-juelich.de/record/906202