This title appears in the Scientific Report : 2016 

Tailoring the chiral magnetic interaction between two individual atoms
Khajetoorians, A. A. (Corresponding author)
Steinbrecher, M. / Ternes, M. / Bouhassoune, M. / dos Santos Dias, M. / Lounis, S. / Wiebe, J. / Wiesendanger, R.
Quanten-Theorie der Materialien; PGI-1
Quanten-Theorie der Materialien; IAS-1
Nature Communications, 7 (2016) S. 10620
London Nature Publishing Group 2016
Journal Article
Controlling Spin-Based Phenomena
Please use the identifier: in citations.
Please use the identifier: in citations.
Chiral magnets are a promising route towards dense magnetic storage technology due to their inherent nano-scale dimensions and energy efficient properties. Engineering chiral magnets requires atomic-level control of the magnetic exchange interactions, including the Dzyaloshinskii–Moriya interaction, which defines a rotational sense for the magnetization of two coupled magnetic moments. Here we show that the indirect conduction electron-mediated Dzyaloshinskii–Moriya interaction between two individual magnetic atoms on a metallic surface can be manipulated by changing the interatomic distance with the tip of a scanning tunnelling microscope. We quantify this interaction by comparing our measurements to a quantum magnetic model and ab-initio calculations yielding a map of the chiral ground states of pairs of atoms depending on the interatomic separation. The map enables tailoring the chirality of the magnetization in dilute atomic-scale magnets.