Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2011

Spectroscopic mapping of local structural distortions in ferroelectric PbTiO 3/SrTiO 3 superlattices at the unit-cell scale

Almudena Torres-Pardo
  • Fonction : Auteur correspondant
  • PersonId : 1488847

Connectez-vous pour contacter l'auteur
Pavlo Zubko
  • Fonction : Auteur
Noémie Jecklin
  • Fonction : Auteur
Céline Lichtensteiger
  • Fonction : Auteur
Jean-Marc Triscone
  • Fonction : Auteur

Résumé

The local structural distortions in polydomain ferroelectric PbTiO 3/SrTiO 3 superlattices are investigated by means of high spatial and energy resolution electron-energy-loss spectroscopy combined with high-angle annular dark field imaging. Local structural variations across the interfaces have been identified with unit-cell resolution through the analysis of the energy-loss near-edge structure of the Ti L 2,3 and O K edges. Ab initio and multiplet calculations of the Ti L 2,3 edges provide unambiguous evidence for an inhomogeneous polarization profile associated with the observed structural distortions across the superlattice.

Dates et versions

hal-04944623 , version 1 (13-02-2025)

Identifiants

Citer

Almudena Torres-Pardo, Alexandre Gloter, Pavlo Zubko, Noémie Jecklin, Céline Lichtensteiger, et al.. Spectroscopic mapping of local structural distortions in ferroelectric PbTiO 3/SrTiO 3 superlattices at the unit-cell scale. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 84 (22), ⟨10.1103/PhysRevB.84.220102⟩. ⟨hal-04944623⟩
25 Consultations
0 Téléchargements

Altmetric

Partager

  • More