An effective spin-orbital Hamiltonian for Sr2FeWO6

N. B. Perkins, S. Di Matteo, G. Jackeli

Research output: Contribution to journalArticlepeer-review

Abstract

We have developed a superexchange theory for the insulating double-perovskite compound Sr2FeWO6. The theory has been implemented in an effective spin-orbital Hamiltonian formulated in terms of spin (S = 2) and orbital pseudo-spin (τ = 1) degrees of freedom of the iron ion only, while W-sites have been integrated out by means of a fourth-order perturbative expansion. We have shown that for realistic values of the model parameters the ground state is antiferromagnetic, as experimentally observed.

Original languageEnglish (US)
Pages (from-to)132-133
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberI
DOIs
StatePublished - May 2004

Keywords

  • Double perovskite
  • Effective spin-orbital Hamiltonian

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