Atomic relaxations and magnetic states in a single-atom tunneling junctionстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Huang R.Z.,
Stepanyuk V.S.,
Klavsyuk A.L.,
Hergert W.,
Bruno P.,
Kirschner J.
Аннотация:A detailed theoretical investigation of structure, electronic and magnetic properties of a single atom magnetic junction is presented. Our studies are based on the density functional theory and the multiple scattering approach. We concentrate on a Cu tip interacting with the Co adatom on Cu(001), and study this junction for the tip-substrate distances ranging from the tunneling to the contact regime. We demonstrate that atomic structure of the tip and position of the adatom above the surface significantly depend on the tip-substrate distance. The adatom-surface distance is found to vary nonmonotonically as the tip approaches the surface. A pronounced change in the spin-polarized local density of states on the Co adatom, and a strong suppression of its magnetic moment are found when the tip is about 4 angstrom away from the surface.