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Electrostriction at the LaAlO3/SrTiO3 Interface

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2011
Author Cancellieri C, Fontaine D, Gariglio S, Reyren N, Caviglia AD, Fete A, Leake SJ, Pauli SA, Willmott PR, Stengel M, Ghosez P, Triscone JM,
Project Interfacial properties of perovskite thin films
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Original article (peer-reviewed)

Journal PHYSICAL REVIEW LETTERS
Volume (Issue) 107(5)
Page(s) 056102-1 - 056102-4
Title of proceedings PHYSICAL REVIEW LETTERS

Abstract

We present a direct comparison between experimental data and ab initio calculations for the electrostrictive effect in the polar LaAlO3 layer grown on SrTiO3 substrates. From the structural data, a complete screening of the LaAlO3 dipole field is observed for film thicknesses between 6 and 20 uc. For thinner films, an expansion of the c axis of 2% matching the theoretical predictions for an electrostrictive effect is observed experimentally.
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