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Your search keyword '"Iacobucci, S."' showing total 18 results
Start Over Author "Iacobucci, S." Publisher american physical society (aps)
18 results on '"Iacobucci, S."'

1. Topological properties and self-energy effects in elemental Yb

Author

Sheverdyaeva, P. M., primary, Offi, F., additional, Gardonio, S., additional, Novinec, L., additional, Trioni, M. I., additional, Ceresoli, D., additional, Iacobucci, S., additional, Ruocco, A., additional, Stefani, G., additional, Petaccia, L., additional, Gorovikov, S., additional, Cappelluti, E., additional, Moras, P., additional, Bihlmayer, G., additional, Blügel, S., additional, and Carbone, C., additional

Published
2021
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4. Molecular adsorption and multilayer growth of pentacene on Cu(100): Layer structure and energetics

Author

Satta M.(1, Iacobucci S.(1), and Larciprete R.(1)

Subjects
Absorption spectroscopy, Condensed Matter Physics, Molecular physics, Electronic, Optical and Magnetic Materials, Organic semiconductor, Pentacene, Condensed Matter::Materials Science, Partial charge, chemistry.chemical_compound, Tight binding, Zigzag, chemistry, Monolayer, AROMATIC-HYDROCARBONS, CHARGE EQUILIBRATION, TRANSITION-METALS, EPITAXIAL-GROWTH, THIN-FILMS, AB-INITIO, SURFACES, ORIENTATION, MONOLAYER, MECHANICS, Physics::Chemical Physics, Thin film
Abstract

We used the partial charge tight binding method to perform a full structure optimization to determine equilibrium adsorption geometries, energetics, and local charge redistribution for molecular adsorption and multilayer growth of pentacene on Cu(100). We found that single molecule adsorption induces only a localized perturbation of the metal lattice which is limited to the topmost layers. At saturation coverage four stable topologies (Brick, Wave, Lines and Zigzag) were identified, all based on pentacene molecules lying flat on the metal surface and with the central phenyl ring adsorbed in top position. Only two (Brick and Wave) out of the four structures are able to sustain multilayer growth. In both cases, assembling beyond the second layer corresponds to a transition from the flat to a tilted geometry, in which the pentacenes adopt a face-plane-face arrangement leading to a herringbone structure. The energetics of the different structure are reported as a function of the molecular number density of the pentacene multilayer by calculating cohesive, stress, and electrostatic energies. The dominant tilted molecular orientation in the pentacene multilayer is in agreement with the average tilt angle of 65\ifmmode^\circ\else\textdegree\fi{} between the molecular plane and the Cu surface derived by near edge x-ray absorption spectroscopy of a four monolayer pentacene film deposited on Cu(100).

Published
2007

5. Monitoring antiferromagnetism via angle-resolved Auger photoelectron coincidence spectroscopy: The case of NiO/Ag(001)

Author

Gotter, R., primary, Sbroscia, M., additional, Caminale, M., additional, Vaidya, S. R., additional, Perfetto, E., additional, Moroni, R., additional, Bisio, F., additional, Iacobucci, S., additional, Di Filippo, G., additional, Offi, F., additional, Ruocco, A., additional, Stefani, G., additional, Mattera, L., additional, and Cini, M., additional

Published
2013
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18. Revisiting the Yb electronic structure with low-energy photoemission spectroscopy

Author

Luca Petaccia, Paolo Vilmercati, Giovanni Stefani, Andrea Goldoni, M. I. Trioni, G. Panaccione, Aurora Rizzo, Francesco Offi, S. Gorovikov, Alessandro Ruocco, S. Iacobucci, Offi, Francesco, Vilmercati, P, Petaccia, L, Gorovikov, S, Ruocco, Alessandro, Trioni, Mi, Rizzo, A, Goldoni, A, Stefani, Giovanni, Panaccione, G, and Iacobucci, S.

Subjects
Physics, Photon, Valence (chemistry), Photoemission spectroscopy, Inverse photoemission spectroscopy, Fermi level, Ab initio, Electronic structure, Photon energy, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, symbols.namesake, symbols, Condensed Matter::Strongly Correlated Electrons, Atomic physics
Abstract

""\\"Low-energy photoemission spectroscopy in the photon energy range between 5.5 and 21 eV is used to investigate the valence electronic structure of Yb polycrystalline films. With the lowering of the photon energy below 11 eV, additional spectral features, nearly absent at higher photon energy, become predominant, in particular a peak located right at the Fermi level. With the help of an ab initio theoretical calculation, we interpret the peak as due to the joint influence of filled and empty densities of states, identifying a p-band contribution close to the Fermi level, whose intensity is strongly enhanced at certain photon energies corresponding to modulation of the empty d band.\\"""

Published
2012

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