Proximity effects of a Cu(001) substrate on the ferromagnetism of Co mono- and bilayers

Ru qian Wu*, Arthur J Freeman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Electronic and magnetic properties of mono- and bilayer Co/Cu(001) adsorption systems are studied using full potential linearized augmented plane wave (FLAPW) total energy calculations. The large magnetic moment (2.07μB) of the Co free monolayer is decreased substantially to 1.78μB when adsorbed on the Cu(001) substrate - which is 5% smaller than that (1.87μB) at the clean fcc Co(001) surface. In 2Co/Cu(001), the magnetic moment of the interfacial Co layer drops to 1.50μB, even 10% smaller than the bulk value, 1.65μB. These large proximity effects indicate that the Cu(001) substrate is harmful for Co overlayer magnetism and thus is not a good substrate for developing and studying 2D magnetism.

Original languageEnglish (US)
Pages (from-to)202-210
Number of pages9
JournalJournal of Magnetism and Magnetic Materials
Volume116
Issue number1-2
DOIs
StatePublished - Oct 1 1992

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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