Direct observation of t2g orbital ordering in magnetite
  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. 
J. Schlappa, C. Schuessler-Langeheine, C. F. Chang, H. Ott, A. Tanaka,   Z. Hu, M. W. Haverkort, E. Schierle, E. Weschke, G....