期刊
PHYSICAL REVIEW LETTERS
卷 107, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.056102
关键词
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资金
- MICINN-Spain [MAT2010-18113, CSD2007-00041]
- Ramon y Cajal program
- Swiss National Science Foundation through the National Center of Competence in Research
- European Union
- Belgian State-Belgian Science Policy [P6/42]
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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