First-principles theory of surface magnetocrystalline anisotropy and the diatomic-pair model

Ding Sheng Wang, Ruqian Wu, Arthur J Freeman

Research output: Contribution to journalArticle

308 Citations (Scopus)

Abstract

The state-tracking method proposed recently is employed for the first-principles determination of the magnetocrystalline-anisotropy (MCA) energy. A close relationship of the MCA energy to the band structure is found for transition-metal monolayers that show the change of sign of the MCA with respect to the band filling (atomic species) to be determined mainly by the spin-orbit coupling within the spin-down bands. The Fe monolayer with the π-bonding band as the highest occupied band exhibits positive MCA (easy axis along the layer normal). However, the effect of strain on the MCA of the Fe monolayer demonstrates the effect of the spin-orbit coupling between opposite-spin states. A model for the electronic origin of the magnetic anisotropy of this two-dimensional system is presented that explains the first-principles MCA results for iron and cobalt monolayers on the basis of the bonding character between two d atoms, the band broadening due to increase in coordination, and geometry (symmetry).

Original languageEnglish
Pages (from-to)14932-14947
Number of pages16
JournalPhysical Review B
Volume47
Issue number22
DOIs
Publication statusPublished - 1993

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Magnetocrystalline anisotropy
anisotropy
Monolayers
Orbits
orbits
Magnetic anisotropy
Cobalt
Band structure
Transition metals
Iron
cobalt
transition metals
Atoms
Geometry
iron
energy
symmetry
geometry
electronics

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

First-principles theory of surface magnetocrystalline anisotropy and the diatomic-pair model. / Wang, Ding Sheng; Wu, Ruqian; Freeman, Arthur J.

In: Physical Review B, Vol. 47, No. 22, 1993, p. 14932-14947.

Research output: Contribution to journalArticle

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