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.
@article{arxiv.cond-mat/0405644,
title = {Long-range electronic interactions between adatoms on transition metal surfaces},
author = {V. S. Stepanyuk and L. Niebergall and A. N. Baranov and W. Hergert and P. Bruno},
journal= {arXiv preprint arXiv:cond-mat/0405644},
year = {2007}
}
Comments
7 pages, 5 embedded prostscript figures, submited to Computational Materials Science as proceedings of the TAMC'4 Symposium, Toulouse, April 2004