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Electronic and magnetic properties of a hexanuclear ferric wheel

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  • H. Nieber
  • K. Doll
  • G. Zwicknagl

Abstract

The electronic and magnetic properties of the hexanuclear ferric wheel [ LiFe6(OCH3)12-(dbm)6] PF6 have been studied with all-electron Hartree-Fock and full-potential density functional calculations. The best agreement for the magnetic exchange coupling is at the level of the B3LYP hybrid functional. Surprisingly, the Hartree-Fock approximation gives the wrong sign for the exchange coupling. The local density approximation and the gradient corrected functional PBE strongly overestimate the exchange coupling due to the too large delocalization of the d-orbitals. These findings are supported by results from the Mulliken population analysis for the magnetic moments and the charge on the individual atoms. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005

Suggested Citation

  • H. Nieber & K. Doll & G. Zwicknagl, 2005. "Electronic and magnetic properties of a hexanuclear ferric wheel," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 44(2), pages 209-215, March.
    • Handle: RePEc:spr:eurphb:v:44:y:2005:i:2:p:209-215
    DOI: 10.1140/epjb/e2005-00116-5
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