http://www.cnr.it/ontology/cnr/individuo/prodotto/ID313163
Structural and electronic properties of anisotropic ultrathin organic films from dichroic resonant soft x-ray reflectivity (Articolo in rivista)
- Type
- Label
- Structural and electronic properties of anisotropic ultrathin organic films from dichroic resonant soft x-ray reflectivity (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.89.045401 (literal)
- Alternative label
Pasquali, Luca; Mukherjee, Subhrangsu; Terzi, Fabio; Giglia, Angelo; Mahne, Nicola; Koshmak, Konstantin; Esaulov, Vladimir; Toccafondi, Chiara; Canepa, Maurizio; Nannarone, Stefano (2014)
Structural and electronic properties of anisotropic ultrathin organic films from dichroic resonant soft x-ray reflectivity
in Physical review. B, Condensed matter and materials physics
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Pasquali, Luca; Mukherjee, Subhrangsu; Terzi, Fabio; Giglia, Angelo; Mahne, Nicola; Koshmak, Konstantin; Esaulov, Vladimir; Toccafondi, Chiara; Canepa, Maurizio; Nannarone, Stefano (literal)
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- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Universita di Modena e Reggio Emilia; IOM CNR; University of Johannesburg; Abdus Salam International Centre for Theoretical Physics; Universita di Modena e Reggio Emilia; University of Paris Sud - Paris XI; Centre National de la Recherche Scientifique (CNRS); University of Genoa; University of Genoa (literal)
- Titolo
- Structural and electronic properties of anisotropic ultrathin organic films from dichroic resonant soft x-ray reflectivity (literal)
- Abstract
- We developed a quantitative approach for the determination of molecular arrangement and electronic structure in anisotropic organic ultrathin films based on the measurement of polarized reflectivity at the carbon K-edge. The reflectivity spectra were fitted to a parameterized model calculation. The method was applied to a self-assembled monolayer of 1,4-benzenedimethanethiol on gold. To simulate reflectivity, the organic anisotropic film was described by a dielectric tensor, obtained by ab initio calculations for the single molecule and suitable rotations to describe the molecular organization in film domains. Film structure was obtained though the best fit of the simulation to the experiment. Results were consistent with a monolayer-thick film composed of domains of molecules with in-plane isotropic distribution of orientations. In each domain, molecules adopted a standing configuration, with a tilt of 28 degrees relative to the substrate normal. Information on the modification of the molecular electronic states due to chemical bonding was derived. (literal)
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