Magnetic phases of cobalt atomic clusters on tungsten

Pavel V. Lukashev, Ji Hyun Kim, Seolun Yang, Jae Sung Kim, Xumin Chen, Geoffrey Rojas, Jan Honolka, Ralph Skomski, Axel Enders, Renat F. Sabirianov

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

First-principle calculations are employed to show that the magnetic structure of small atomic clusters of Co, formed on a crystalline W(110) surface and containing 3-12 atoms, strongly deviates from the usual stable ferromagnetism of Co in other systems. The clusters are ferri-, ferro- or non-magnetic, depending on cluster size and geometry. We determine the atomic Co moments and their relative alignment, and show that antiferromagnetic spin alignment in the Co clusters is caused by hybridization with the tungsten substrate and band filling. This is in contrast with the typical strong ferromagnetism of bulk Co alloys, and ferromagnetic coupling in Fe/W(110) clusters.

Original languageEnglish (US)
Article number036003
JournalJournal of Physics Condensed Matter
Volume25
Issue number3
DOIs
StatePublished - Jan 23 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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    Lukashev, P. V., Kim, J. H., Yang, S., Kim, J. S., Chen, X., Rojas, G., Honolka, J., Skomski, R., Enders, A., & Sabirianov, R. F. (2013). Magnetic phases of cobalt atomic clusters on tungsten. Journal of Physics Condensed Matter, 25(3), [036003]. https://doi.org/10.1088/0953-8984/25/3/036003