Journal Article

FZJ-2017-07186

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A gateway towards non-collinear spin processing using three-atom magnets with strong substrate coupling

Hermenau, J. ; Azpiroz, J. I.FZJ* ; Hübner, C. ; Sonntag, A. ; Baxevanis, B. ; Ton, K. T. ; Steinbrecher, M. ; Khajetoorians, A. A. ; dos Santos Dias, M.FZJ* ; Blügel, S.FZJ* ; Wiesendanger, R. ; Lounis, S.FZJ* ; Wiebe, J. (Corresponding author)

2017
Nature Publishing Group London

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Please use a persistent id in citations: http://hdl.handle.net/2128/15693  doi:10.1038/s41467-017-00506-7

Abstract: 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.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)
2. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2017

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