Long-range electronic interactions between adatoms on transition metal surfaces

Details Long-range electronic interactions between adatoms on transition metal surfaces Long-range electronic interactions between adatoms on transition metal surfaces

2004-05-27

arxiv.org/abs/cond-mat/0405644v1

Physics

Condensed Matter

Materials Science

7 pages, 5 embedded prostscript figures, submited to Computational Materials Science as proceedings of the TAMC'4 Symposium, T

Scientific paper

Ab initio calculations of surface-state mediated interactions between Cu adatoms on transition metal surfaces are presented. We concentrate on Co/Cu(111) and Co(0001) substrates and compare results with our calculations for Cu(111). Our studies show that surface states of Co/Cu(111) and Co(0001) are spin-polarized. We reveal that long-range interactions between adatoms are mainly determined by sp-majority states. In contrast to Cu(111) and Co/Cu(111), the interaction between adatoms on Co(0001) is strongly suppressed at large adsorbate separations.

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