Site selective adsorption of the spin crossover complex Fe(phen)2(NCS) on Au(111)
| Autor: | Axel Enders, Peter A. Dowben, Sumit Beniwal, Suchetana Sarkar, Birgit Weber, Felix Baier |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Spins 02 engineering and technology Crystal structure 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences law.invention Crystallography Adsorption Transition metal Spin crossover law 0103 physical sciences Molecule General Materials Science Scanning tunneling microscope 010306 general physics 0210 nano-technology Quantum tunnelling |
| Zdroj: | Journal of Physics: Condensed Matter. 32:324003 |
| ISSN: | 1361-648X 0953-8984 |
| Popis: | The iron(II) spin crossover complex Fe(1,10-phenanthroline)2(NCS)2, dubbed Fe-phen, has been studied with scanning tunneling microscopy, after adsorption on the ‘herringbone’ reconstructed surface of Au(111) for sub-monolayer coverages. The Fe-phen molecules attach, through their NCS-groups, to the Au atoms of the fcc domains of the reconstructed surface only, thereby lifting the herringbone reconstruction. The molecules stack to form 1D chains, which run along the Au[110] directions. Neighboring Fe-phen molecules are separated by approximately 2.65 nm, corresponding to 9 atomic spacings in this direction. The molecular axis, defined by the two phenanthroline groups, is aligned perpendicular to the chain axis, along the Au 22 1 ¯ direction, thereby bridging over 5 atomic spacings, in this direction. Experimental evidence suggests that the molecular spins are locked in a mixed state in the sub-monolayer regime at temperatures between 100 K and 300 K. |
| Databáze: | OpenAIRE |
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