Direct observation of t2g orbital ordering in magnetite

Details Direct observation of t2g orbital ordering in magnetite Direct observation of t2g orbital ordering in magnetite

2006-05-03

arxiv.org/abs/cond-mat/0605096v2

Phys. Rev. Lett. 100, 026406 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.100.026406

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.

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