Non-collinear spin states in bottom-up fabricated atomic chains

Nature Communications
M SteinbrecherJ Wiebe

Abstract

Non-collinear spin states with unique rotational sense, such as chiral spin-spirals, are recently heavily investigated because of advantages for future applications in spintronics and information technology and as potential hosts for Majorana Fermions when coupled to a superconductor. Tuning the properties of such spin states, e.g., the rotational period and sense, is a highly desirable yet difficult task. Here, we experimentally demonstrate the bottom-up assembly of a spin-spiral derived from a chain of iron atoms on a platinum substrate using the magnetic tip of a scanning tunneling microscope as a tool. We show that the spin-spiral is induced by the interplay of the Heisenberg and Dzyaloshinskii-Moriya components of the Ruderman-Kittel-Kasuya-Yosida interaction between the iron atoms. The relative strengths and signs of these two components can be adjusted by the interatomic iron distance, which enables tailoring of the rotational period and sense of the spin-spiral.

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Citations

Apr 15, 2020·Nature Communications·Zoltán ScherüblSzabolcs Csonka
Jun 25, 2020·Physical Review. E·Petr BraunThomas Guhr
Jul 1, 2020·Proceedings of the National Academy of Sciences of the United States of America·J HerbrychE Dagotto
Jun 14, 2019·Nature Communications·Jan HermenauJens Wiebe
Apr 3, 2021·Nature Communications·Philip BeckRoland Wiesendanger

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