Microstructure and interface studies of LaVO3/SrVO3 superlattices

P. Boullay; A. David; W. C. Sheets; U. Lüders; W. Prellier; H. Tan; J. Verbeeck; G. Van Tendeloo; C. Gatel; G. Vincze; Z. Radi

doi:10.1103/PhysRevB.83.125403

Microstructure and interface studies of LaVO3/SrVO3 superlattices

Materials Science 2015-05-20 v1 Mesoscale and Nanoscale Physics Strongly Correlated Electrons

Authors: P. Boullay , A. David , W. C. Sheets , U. Lüders , W. Prellier , H. Tan , J. Verbeeck , G. Van Tendeloo , C. Gatel , G. Vincze , Z. Radi

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Abstract

The structure and interface characteristics of (LaVO3)6m(SrVO3)m superlattices deposited on (100)-SrTiO3 (STO) substrate were studied using Transmission Electron Microscopy (TEM). Cross-section TEM studies revealed that both LaVO3 (LVO) and SrVO3 (SVO) layers are good single crystal quality and epitaxially grown with respect to the substrate. It is evidenced that LVO layers are made of two orientational variants of a distorted perovskite compatible with bulk LaVO3 while SVO layers suffers from a tetragonal distortion due to the substrate induced stain. Electron Energy Loss Spectroscopy (EELS) investigations indicate changes in the fine structure of the V L23 edge, related to a valence change between the LaVO3 and SrVO3 layers.

Keywords

oxide heterostructures oxide interfaces

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@article{arxiv.1012.3665,
  title  = {Microstructure and interface studies of LaVO3/SrVO3 superlattices},
  author = {P. Boullay and A. David and W. C. Sheets and U. Lüders and W. Prellier and H. Tan and J. Verbeeck and G. Van Tendeloo and C. Gatel and G. Vincze and Z. Radi},
  journal= {arXiv preprint arXiv:1012.3665},
  year   = {2015}
}

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Microstructure and interface studies of LaVO3/SrVO3 superlattices

Abstract

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