Magnetic properties of Fe overlayers on W(001) and the effects of oxygen adsorption

Ruqian Wu, Arthur J Freeman

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The structural and magnetic properties of Fe monolayers and bilayers on the W(001) substrate and the effects of oxygen adsorption were determined using the all-electron total-energy local-density full-potential linearized augmented plane-wave method. The strong ferromagnetism of the free Fe monolayer is completely destroyed by the Fe-W interaction for monolayer Fe/W(001); instead, a c(2×2) antiferromagnetic configuration becomes the ground state. For bilayer Fe/W(001), a tetragonal rather than bcc structure is formed. The ferromagnetism of the previous dead Fe layer is restored by the additional adsorbed Fe layer; the magnetic moment in the interface and surface Fe layers increase to 1.68B and 2.43B, respectively. These ferromagnetic Fe layers induce a sizable magnetic moment (0.22B) in the interfacial W layer. Finally, oxygen adsorption on bilayer Fe/W(001) is found to decrease greatly the magnetism of the interfacial Fe layerto only 0.7Bbut not to affect the top Fe layer.

Original languageEnglish
Pages (from-to)7532-7535
Number of pages4
JournalPhysical Review B
Volume45
Issue number13
DOIs
Publication statusPublished - 1992

ASJC Scopus subject areas

  • Condensed Matter Physics

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