Ab initio study of mirages and magnetic interactions in quantum corrals
Abstract
The state of the art ab initio calculations of quantum mirages,the spin-polarization of surface-state electrons and the exchange interaction between magnetic adatoms in Cu and Co corrals on Cu(111) are presented. We find that the spin-polarization of the surface-state electrons caused by magnetic adatoms can be projected to a remote location and can be strongly enhanced in corrals compared to an open surface.Our studies give a clear evidence that quantum corrals could permit to tailor the exchange interaction between magnetic adatoms at large separations. The spin-polarization of surface-state electrons at the empty focus in the Co corral used in the experimental setup of Manoharan et al., (Nature 403, 512 (2000)) is revealed.
Keywords
Cite
@article{arxiv.cond-mat/0502506,
title = {Ab initio study of mirages and magnetic interactions in quantum corrals},
author = {V. S. Stepanyuk and L. Niebergall and W. Hergert and P. Bruno},
journal= {arXiv preprint arXiv:cond-mat/0502506},
year = {2009}
}
Comments
Submitted to Physical Review Letters