ArticleScience advances2023
Sagnac interferometry for high-sensitivity optical measurements of spin-orbit torque.
Article in Science advances, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Bridging Molecular and Bulk Nonlinearities: Kerr Effect Phenomena in Transparent Ceramic Systems.International journal of molecular sciences · 2026Review
- Information processing at the speed of light.Frontiers of optoelectronics · 2024Review
- Sagnac interferometry for high-sensitivity optical measurements of spin-orbit torque.Science advances · 2023Article
- Ultra-thin lithium aluminate spinel ferrite films with perpendicular magnetic anisotropy and low damping.Nature communications · 2023Article
- Strong variation of spin-orbit torques with relative spin relaxation rates in ferrimagnets.Nature communications · 2023Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sagnac interferometry can provide a substantial improvement in signal-to-noise ratio compared to conventional magnetic imaging based on the magneto-optical Kerr effect. We show that this improvement is sufficient to allow quantitative measurements of current-induced magnetic deflections due to spin-orbit torque even in thin-film magnetic samples with perpendicular magnetic anisotropy, for which the Kerr rotation is second order in the magnetic deflection. Sagnac interferometry can also be applied beneficially for samples with in-plane anisotropy, for which the Kerr rotation is first order in the deflection angle. Optical measurements based on Sagnac interferometry can therefore provide a cross-check on electrical techniques for measuring spin-orbit torque. Different electrical techniques commonly give quantitatively inconsistent results so that Sagnac interferometry can help to identify which techniques are affected by unidentified artifacts.
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Registered trials
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