This title appears in the Scientific Report :
2022
Please use the identifier:
http://hdl.handle.net/2128/32208 in citations.
Please use the identifier: http://dx.doi.org/10.1021/acs.jpcc.1c10625 in citations.
Uniaxially Aligned 1D Sandwich-Molecular Wires: Electronic Structure and Magnetism
Uniaxially Aligned 1D Sandwich-Molecular Wires: Electronic Structure and Magnetism
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 substra...
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Personal Name(s): | Kraus, Stefan (Corresponding author) |
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Herman, Alexander / Huttmann, Felix / Bianchi, Marco / Stan, Raluca-Maria / Holt, Ann Julie / Tsukamoto, Shigeru / Rothenbach, Nico / Ollefs, Katharina / Dreiser, Jan / Bischof, Ken / Wende, Heiko / Hofmann, Philip / Atodiresei, Nicolae / Michely, Thomas | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: |
The journal of physical chemistry |
Imprint: |
Washington, DC
Soc.
2022
|
DOI: |
10.1021/acs.jpcc.1c10625 |
Document Type: |
Journal Article |
Research Program: |
Topological Matter |
Link: |
Published on 2022-02-07. Available in OpenAccess from 2023-02-07. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1021/acs.jpcc.1c10625 in citations.
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. |