Direct observation of t2g orbital ordering in magnetite

J. Schlappa; C. Schuessler-Langeheine; C. F. Chang; H. Ott; A. Tanaka; Z. Hu; M. W. Haverkort; E. Schierle; E. Weschke; G. Kaindl; L. H. Tjeng

doi:10.1103/PhysRevLett.100.026406

Direct observation of t2g orbital ordering in magnetite

Strongly Correlated Electrons 2010-01-25 v2

Authors: J. Schlappa , C. Schuessler-Langeheine , C. F. Chang , H. Ott , A. Tanaka , Z. Hu , M. W. Haverkort , E. Schierle , E. Weschke , G. Kaindl , L. H. Tjeng

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Abstract

Using soft-x-ray diffraction at the site-specific resonances in the Fe L23 edge, we find clear evidence for orbital and charge ordering in magnetite below the Verwey transition. The spectra show directly that the (001/2) diffraction peak (in cubic notation) is caused by t2g orbital ordering at octahedral Fe2+ sites and the (001) by a spatial modulation of the t2g occupation.

Keywords

magnetite orbital ordering charge ordering Verwey transition soft-x-ray diffraction t2g orbitals

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@article{arxiv.cond-mat/0605096,
  title  = {Direct observation of t2g orbital ordering in magnetite},
  author = {J. Schlappa and C. Schuessler-Langeheine and C. F. Chang and H. Ott and A. Tanaka and Z. Hu and M. W. Haverkort and E. Schierle and E. Weschke and G. Kaindl and L. H. Tjeng},
  journal= {arXiv preprint arXiv:cond-mat/0605096},
  year   = {2010}
}

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to appear in Phys. Rev. Lett

Direct observation of t2g orbital ordering in magnetite

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