%0 Journal Article
%A Hermenau, J.
%A Azpiroz, Julen Ibanez
%A Hübner, Chr.
%A Sonntag, A.
%A Baxevanis, B.
%A Ton, K. T.
%A Steinbrecher, M.
%A Khajetoorians, A. A.
%A dos Santos Dias, M.
%A Blügel, S.
%A Wiesendanger, R.
%A Lounis, S.
%A Wiebe, J.
%T A gateway towards non-collinear spin processing using three-atom magnets with strong substrate coupling
%J Nature Communications
%V 8
%N 1
%@ 2041-1723
%C London
%I Nature Publishing Group
%M FZJ-2017-07186
%P 642
%D 2017
%X A cluster of a few magnetic atoms on the surface of a nonmagnetic substrate is one suitable realization of a bit for spin-based information technology. The prevalent approach to achieve magnetic stability is decoupling the cluster spin from substrate conduction electrons in order to suppress destabilizing spin-flips. However, this route entails less flexibility in tailoring the coupling between the bits needed for spin-processing. Here, we use a spin-resolved scanning tunneling microscope to write, read, and store spin information for hours in clusters of three atoms strongly coupled to a substrate featuring a cloud of non-collinearly polarized host atoms, a so-called non-collinear giant moment cluster. The giant moment cluster can be driven into a Kondo screened state by simply moving one of its atoms to a different site. Using the exceptional atomic tunability of the non-collinear substrate mediated Dzyaloshinskii–Moriya interaction, we propose a logical scheme for a four-state memory.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:28935897
%U <Go to ISI:>//WOS:000411416100002
%R 10.1038/s41467-017-00506-7
%U https://juser.fz-juelich.de/record/838609