Chiral spin spiral in synthetic antiferromagnets probed by circular dichroism in x-ray resonant magnetic scattering
| Autor: | Vincent Cros, Nicolas Reyren, Yanis Sassi, Fernando Ajejas, Samuel Flewett, William Legrand, Nicolas Jaouen, Erick Burgos-Parra, Cyril Léveillé |
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| Přispěvatelé: | Unité mixte de physique CNRS/Thales (UMPhy CNRS/THALES), Centre National de la Recherche Scientifique (CNRS)-THALES, THALES [France]-Centre National de la Recherche Scientifique (CNRS), ANR-17-CE24-0025,TOPSKY,Propriétés topologiques des skyrmions magnétiques et opportunitiés pour le dévelopement de nouveaux dispositifs spintroniques(2017), ANR-15-GRFL-0005,SOgraph,Tailoring Spin-Orbit effects in Graphene for spin-orbitronic applications(2015), ANR-10-LABX-0035,Nano-Saclay,Paris-Saclay multidisciplinary Nano-Lab(2010), European Project: 824123,SKYTOP |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Circular dichroism Condensed Matter - Materials Science Antisymmetric exchange Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Scattering Skyrmion Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Magnetization Reciprocal lattice Ferromagnetism [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] 010306 general physics 0210 nano-technology ComputingMilieux_MISCELLANEOUS Spin-½ |
| Zdroj: | Physical Review B Physical Review B, American Physical Society, 2021, 104 (6), ⟨10.1103/PhysRevB.104.L060402⟩ Physical Review B, 2021, 104 (6), ⟨10.1103/PhysRevB.104.L060402⟩ |
| ISSN: | 2469-9950 2469-9969 |
| DOI: | 10.1103/PhysRevB.104.L060402⟩ |
| Popis: | Noncollinear chiral spin textures in ferromagnetic multilayers are at the forefront of recent research in nano-magnetism with the promise for fast and energy-efficient devices. The recently demonstrated possibilities to stabilize such chiral structures in synthetic antiferromagnets (SAF) has raised interests as they are immune to dipolar field, hence favoring the stabilization of ultra small textures, improve mobility and avoid the transverse deflections of moving skyrmions limiting the efficiency in some foreseen applications. However, such systems with zero net magnetization are hence difficult to characterize by most of the standard techniques. Here, we report that the relevant parameters of a magnetic SAF texture, those being its period, its type (N\'eel or Bloch) and its chirality (clockwise or counterclockwise), can be directly determined using the circular dichroism in x-ray resonant scattering (CD-XRMS) at half integer multilayer Bragg peaks in reciprocal space. The analysis of the dependence in temperature down to 40K allows us moreover to address the question of the temperature stability of a spin spiral in a SAF sample and of the temperature scaling of the symmetric and antisymmetric exchange interactions. |
| Databáze: | OpenAIRE |
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