TY  - JOUR
AU  - Kraus, Stefan
AU  - Herman, Alexander
AU  - Huttmann, Felix
AU  - Bianchi, Marco
AU  - Stan, Raluca-Maria
AU  - Holt, Ann Julie
AU  - Tsukamoto, Shigeru
AU  - Rothenbach, Nico
AU  - Ollefs, Katharina
AU  - Dreiser, Jan
AU  - Bischof, Ken
AU  - Wende, Heiko
AU  - Hofmann, Philip
AU  - Atodiresei, Nicolae
AU  - Michely, Thomas
TI  - Uniaxially Aligned 1D Sandwich-Molecular Wires: Electronic Structure and Magnetism
JO  - The journal of physical chemistry  / C
VL  - 126
IS  - 6
SN  - 1932-7447
CY  - Washington, DC
PB  - Soc.
M1  - FZJ-2022-01290
SP  - 3140–3150
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000766228300023
DO  - DOI:10.1021/acs.jpcc.1c10625
UR  - https://juser.fz-juelich.de/record/906202
ER  -