Direct Observation of t2g Orbital Ordering in Magnetite

J. Schlappa, C. Schüßler-Langeheine, C. F. Chang, H. Ott, A. Tanaka, Z. Hu, M. W. Haverkort, E. Schierle, E. Weschke, G. Kaindl, and L. H. Tjeng
Phys. Rev. Lett. 100, 026406 – Published 17 January 2008

Abstract

Using soft-x-ray diffraction at the site-specific resonances in the Fe L2,3 edge, we find clear evidence for orbital and charge ordering in magnetite below the Verwey transition. The spectra show directly that the (0012) 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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  • Received 3 May 2006

DOI:https://doi.org/10.1103/PhysRevLett.100.026406

©2008 American Physical Society

Authors & Affiliations

J. Schlappa1, C. Schüßler-Langeheine1, C. F. Chang1, H. Ott1, A. Tanaka2, Z. Hu1, M. W. Haverkort1, E. Schierle3, E. Weschke3, G. Kaindl3, and L. H. Tjeng1

  • 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
  • 2Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
  • 3Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany

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Issue

Vol. 100, Iss. 2 — 18 January 2008

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