Spin-orbit enabled all-electrical readout of chiral spin-textures

Imara Lima Fernandes (), Stefan Blügel and Samir Lounis ()
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Imara Lima Fernandes: Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA
Stefan Blügel: Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA
Samir Lounis: Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Chirality and topology are intimately related fundamental concepts, which are heavily explored to establish spin-textures as potential magnetic bits in information technology. However, this ambition is inhibited since the electrical reading of chiral attributes is highly non-trivial with conventional current perpendicular-to-plane (CPP) sensing devices. Here we demonstrate from extensive first-principles simulations and multiple scattering expansion the emergence of the chiral spin-mixing magnetoresistance (C-XMR) enabling highly efficient all-electrical readout of the chirality and helicity of respectively one- and two-dimensional magnetic states of matter. It is linear with spin-orbit coupling in contrast to the quadratic dependence associated with the unveiled non-local spin-mixing anisotropic MR (X-AMR). Such transport effects are systematized on various non-collinear magnetic states – spin-spirals and skyrmions – and compared to the uncovered spin-orbit-independent multi-site magnetoresistances. Owing to their simple implementation in readily available reading devices, the proposed magnetoresistances offer exciting and decisive ingredients to explore with all-electrical means the rich physics of topological and chiral magnetic objects.

Date: 2022
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DOI: 10.1038/s41467-022-29237-0

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