The (1x1)-> hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• The (1x1)-> hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Baraldi, A; Vesselli, E; Bianchettin, L; Comelli, G; Lizzit, S; Petaccia, L; de Gironcoli, S; Locatelli, A; Mentes, TO; Aballe, L; Weissenrieder, J; Andersen, JN (2007)
  The (1x1)-> hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Baraldi, A; Vesselli, E; Bianchettin, L; Comelli, G; Lizzit, S; Petaccia, L; de Gironcoli, S; Locatelli, A; Mentes, TO; Aballe, L; Weissenrieder, J; Andersen, JN (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 127 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Trieste, Dept Phys, I-34127 Trieste, Italy; Univ Trieste, Ctr Excellence Nanostructured Mat, I-34127 Trieste, Italy; CNR, INFM, TASC, Italy Lab, I-34012 Trieste, Italy; Sincrotrone Trieste SCpA, I-34012 Trieste, Italy; SISSA, I-34014 Trieste, Italy; Natl Simulat Ctr, INFM CNR DEMOCRITOS, I-34014 Trieste, Italy; Lund Univ, Max Lab, SE-22100 Lund, Sweden; Lund Univ, Dept Synchrotron Radiat Res, S-22100 Lund, Sweden (literal)

Titolo

• The (1x1)-> hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission (literal)

Abstract

• The (1 x 1)-> quasihexagonal (HEX) phase transition on a clean Pt(100) surface was investigated by monitoring the time evolution of the Pt4f(7/2) core level photoemission spectra. The spectral component originating from the atoms forming the (1 x .1) metastable unreconstructed surface was found at -570 +/- 20 meV with respect to the bulk peak. Ab initio calculations based on density functional theory confirmed the experimental assignment. At temperatures above 370 K, the (1 x 1) phase irreversibly reverts to the more stable HEX phase, characterized by a surface core level shifted component at -185 +/- 40 meV. By analyzing the intensity evolution of the core level components, measured at different temperatures in the range of 393-475 K, we determined the activation energy of the phase transformation, E=0.76 +/- 0.04 eV. This value is considerably lower than the one previously determined by means of low energy electron diffraction. Possible reasons for this discrepancy are discussed. (C) 2007 American Institute of Physics. (literal)

Prodotto di

• Teoria, simulazione e progetto assistito dal calcolatore di materiali nanostrutturati (MD.P06.025.001) (Modulo)
• Sintesi e studio delle proprieta' strutturali, ottiche ed elettroniche di sistemi aventi almeno una dimensione nanometrica (MD.P06.018.001) (Modulo)

Autore CNR

• ALESSANDRO BARALDI (Unità di personale esterno)
• STEFANO DE GIRONCOLI (Unità di personale esterno)
• GIOVANNI COMELLI (Persona)

Insieme di parole chiave

• Parole chiave di "The (1x1)-> hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission" (Insieme di parole chiave)

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Autore CNR di

• ALESSANDRO BARALDI (Unità di personale esterno)
• STEFANO DE GIRONCOLI (Unità di personale esterno)
• GIOVANNI COMELLI (Persona)

Prodotto

• Teoria, simulazione e progetto assistito dal calcolatore di materiali nanostrutturati (MD.P06.025.001) (Modulo)
• Sintesi e studio delle proprieta' strutturali, ottiche ed elettroniche di sistemi aventi almeno una dimensione nanometrica (MD.P06.018.001) (Modulo)

Insieme di parole chiave di

• Parole chiave di "The (1x1)-> hexagonal structural transition on Pt(100) studied by high-energy resolution core level photoemission" (Insieme di parole chiave)