Charge ordering in oxides : a conundrum solved by resonant diffraction

Y. Joly; S. Grenier; J. E. Lorenzo

Charge ordering in oxides : a conundrum solved by resonant diffraction

Materials Science 2007-05-23 v1

Authors: Y. Joly , S. Grenier , J. E. Lorenzo

Abstract

We show that in mixed-valence 3d transition metal oxides undergoing a structural transition, the low temperature phase results from an effective ordering of the charge. This arrangement and the quantitative evaluation of the atomic charges are determined by using resonant x-ray scattering experiments further analyzed with the help of ab initio calculations of the corresponding scattering factors. We have found that this reorganization concerns only a small fraction of electron and is necessary to reconcile all the experimental data.

Keywords

charge ordering charge transfer phase transitions

Cite

@article{arxiv.cond-mat/0301377,
  title  = {Charge ordering in oxides : a conundrum solved by resonant diffraction},
  author = {Y. Joly and S. Grenier and J. E. Lorenzo},
  journal= {arXiv preprint arXiv:cond-mat/0301377},
  year   = {2007}
}

Comments

4 pages, 2 figures

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