Surface effective-pair interactions in a model transition-metal alloy

R. H. Brown, A. E. Carlsson

Research output: Contribution to journalArticlepeer-review


For a model transition-metal alloy, we find that changes in the third and fourth moments of the electronic density of states alter the effective-pair interaction (EPI) ordering range. The EPI dependence on concentration, single-site energy, and crystal face is explained by showing the dependence of the state-density third and fourth moments on these variables. Examples illustrating these effects are given for bcc and fcc surface EPI's. From this analysis, we find that bulk-clustering and surface-ordering behavior is more likely than bulk-ordering and surface-clustering behavior. In addition, we find that the presence of broken bonds tends to increase the ordering range.

Original languageEnglish
Pages (from-to)9959-9962
Number of pages4
JournalPhysical Review B
Issue number15
StatePublished - 1993


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