Ferroelectric distortion in SrTiO3 thin films on Si(001) by x-ray absorption fine structure spectroscopy: Experiment and first-principles calculations

TitleFerroelectric distortion in SrTiO3 thin films on Si(001) by x-ray absorption fine structure spectroscopy: Experiment and first-principles calculations
Publication TypeJournal Article
Year of Publication2007
AuthorsWoicik JC, Shirley EL, Hellberg CS, Andersen KE, Sambasivan S, Fischer DA, Chapman BD, Stern EA, Ryan P, Ederer DL, Li H
Journal TitlePhysical Review B
Volume75
Pages140103
Date PublishedApr
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberISI:000246075100003
KeywordsBATIO3, CORE-HOLE, origin, oxides, phase-transitions, spectra, STRONTIUM-TITANATE, total-energy calculations
Abstract

Ti K and Ti L-2,L-3 x-ray absorption fine-structure near-edge spectra of SrTiO3 thin films grown coherently on Si(001) reveal the presence of a ferroelectric (FE) distortion at room temperature. This unique phase is a direct consequence of the compressive biaxial strain achieved by coherent epitaxial growth.

DOI10.1103/PhysRevB.75.140103
Alternate JournalPhys. Rev. B