Theory of non-Heisenberg exchange: Results for localized and itinerant magnets

O. N. Mryasov*, A. J. Freeman, A. I. Liechtenstein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


A general formulation of intersite (layer) exchange coupling in bulk (multilayer) materials is proposed based on the treatment of the spin (layer) rotation as a perturbation in terms of the force theorem and multiple scattering theory. The expansion of the intersite (layer) exchange interaction energy gives expressions for the bilinear and biquadratic exchange. For metals, the approach is illustrated by linear muffin-tin orbital calculations of exchange coupling constants in the ferromagnetic 3D-metals and the fee phase of bulk Fe. Long range oscillations of strongly volume dependent exchange coupling in fee Fe appears to be the origin of the spin-density-wave instability in this metastable phase. The correctness of expressions for the limit of localized magnets is demonstrated by calculations for the antiferromagnetic insulator NiO. In contrast with other theories, this method can be used for both nonmagnetic and magnetic spacers in metallic multilayers, as is illustrated by calculations of the interfacial and interlayer exchange in Fe/Mn and Co/Mn.

Original languageEnglish (US)
Pages (from-to)4805-4807
Number of pages3
JournalJournal of Applied Physics
Issue number8 PART 2A
StatePublished - Apr 15 1996

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Theory of non-Heisenberg exchange: Results for localized and itinerant magnets'. Together they form a unique fingerprint.

Cite this