Reference : Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/31093
Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films
English
Despont, L. [> > > >]
Koitzsch, C. [> > > >]
Clerc, F. [> > > >]
Garnier, Manuela [Centre Hospitalier Universitaire de Liège - CHU > > Radiothérapie >]
Aebi, P. [> > > >]
Lichtensteiger, C. [> > > >]
Triscone, J. M. [> > > >]
Garcia de Abajo, F. J. [> > > >]
Bousquet, Eric mailto [Université de Liège - ULg > Département de physique > Physique théorique des matériaux >]
Ghosez, Philippe mailto [Université de Liège - ULg > Département de physique > Physique théorique des matériaux >]
2006
Physical Review. B, Condensed Matter and Materials Physics
American Physical Society
73
094110
Yes (verified by ORBi)
International
1098-0121
1550-235X
Woodbury
NY
[en] X-ray photoelectron diffraction is used to directly probe the intracell polar atomic distortion and tetragonality associated with ferroelectricity in ultrathin epitaxial PbTiO3 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.
Researchers ; Professionals
http://hdl.handle.net/2268/31093
10.1103/PhysRevB.73.094110

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