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Title: Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films

Abstract

X-ray photoelectron diffraction is used to directly probe the intracell polar atomic distortion and tetragonality associated with ferroelectricity in ultrathin epitaxial PbTiO{sub 3} films. Our measurements, combined with ab initio calculations, unambiguously demonstrate noncentrosymmetry in films a few unit cells thick, imply that films as thin as three unit cells still preserve a ferroelectric polar distortion, and also show that there is no thick paraelectric dead layer at the surface.

Authors:
; ; ; ; ; ; ; ; ;  [1];  [2];  [3];  [4]
  1. Institut de Physique, Universite de Neuchatel, CH-2000 Neuchatel (Switzerland)
  2. (Switzerland)
  3. (Spain)
  4. (Belgium)
Publication Date:
OSTI Identifier:
20787951
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 73; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevB.73.094110; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; EPITAXY; FERROELECTRIC MATERIALS; LAYERS; LEAD COMPOUNDS; PEROVSKITE; SURFACES; THIN FILMS; TITANATES; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Despont, L., Koitzsch, C., Clerc, F., Garnier, M. G., Aebi, P., Lichtensteiger, C., Triscone, J.-M., Garcia de Abajo, F. J., Bousquet, E., Ghosez, Ph., DPMC, Universite de Geneve, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4, Centro Mixto CSIC-UPV/EHU, 20080 San Sebastian, and Departement de Physique, Universite de Liege, B-4000 Sart-Tilman. Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.0.
Despont, L., Koitzsch, C., Clerc, F., Garnier, M. G., Aebi, P., Lichtensteiger, C., Triscone, J.-M., Garcia de Abajo, F. J., Bousquet, E., Ghosez, Ph., DPMC, Universite de Geneve, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4, Centro Mixto CSIC-UPV/EHU, 20080 San Sebastian, & Departement de Physique, Universite de Liege, B-4000 Sart-Tilman. Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films. United States. doi:10.1103/PHYSREVB.73.0.
Despont, L., Koitzsch, C., Clerc, F., Garnier, M. G., Aebi, P., Lichtensteiger, C., Triscone, J.-M., Garcia de Abajo, F. J., Bousquet, E., Ghosez, Ph., DPMC, Universite de Geneve, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4, Centro Mixto CSIC-UPV/EHU, 20080 San Sebastian, and Departement de Physique, Universite de Liege, B-4000 Sart-Tilman. Wed . "Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films". United States. doi:10.1103/PHYSREVB.73.0.
@article{osti_20787951,
title = {Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films},
author = {Despont, L. and Koitzsch, C. and Clerc, F. and Garnier, M. G. and Aebi, P. and Lichtensteiger, C. and Triscone, J.-M. and Garcia de Abajo, F. J. and Bousquet, E. and Ghosez, Ph. and DPMC, Universite de Geneve, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4 and Centro Mixto CSIC-UPV/EHU, 20080 San Sebastian and Departement de Physique, Universite de Liege, B-4000 Sart-Tilman},
abstractNote = {X-ray photoelectron diffraction is used to directly probe the intracell polar atomic distortion and tetragonality associated with ferroelectricity in ultrathin epitaxial PbTiO{sub 3} films. Our measurements, combined with ab initio calculations, unambiguously demonstrate noncentrosymmetry in films a few unit cells thick, imply that films as thin as three unit cells still preserve a ferroelectric polar distortion, and also show that there is no thick paraelectric dead layer at the surface.},
doi = {10.1103/PHYSREVB.73.0},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 9,
volume = 73,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2006},
month = {Wed Mar 01 00:00:00 EST 2006}
}