Ultrafast time-evolution of chiral Néel magnetic domain walls probed by circular dichroism in x-ray resonant magnetic scattering

Cyril Léveillé, Erick Burgos-Parra, Yanis Sassi, Fernando Ajejas, Valentin Chardonnet, Emanuele Pedersoli, Flavio Capotondi, Giovanni Ninno, Francesco Maccherozzi, Sarnjeet Dhesi, David M. Burn, Gerrit Laan, Oliver S. Latcham, Andrey V. Shytov, Volodymyr V. Kruglyak, Emmanuelle Jal, Vincent Cros, Jean-Yves Chauleau, Nicolas Reyren, Michel Viret and Nicolas Jaouen ()
Additional contact information
Cyril Léveillé: Synchrotron SOLEIL, Saint-Aubin, Boite Postale 48
Erick Burgos-Parra: Synchrotron SOLEIL, Saint-Aubin, Boite Postale 48
Yanis Sassi: Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay
Fernando Ajejas: Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay
Valentin Chardonnet: Sorbonne Université, CNRS, Laboratoire Chimie Physique – Matière et Rayonnement, LCPMR
Emanuele Pedersoli: Elettra-Sincrotrone Trieste, 34149 Basovizza
Flavio Capotondi: Elettra-Sincrotrone Trieste, 34149 Basovizza
Giovanni Ninno: Elettra-Sincrotrone Trieste, 34149 Basovizza
Francesco Maccherozzi: Diamond Light Source
Sarnjeet Dhesi: Diamond Light Source
David M. Burn: Diamond Light Source
Gerrit Laan: Diamond Light Source
Oliver S. Latcham: University of Exeter, Stocker road
Andrey V. Shytov: University of Exeter, Stocker road
Volodymyr V. Kruglyak: University of Exeter, Stocker road
Emmanuelle Jal: Sorbonne Université, CNRS, Laboratoire Chimie Physique – Matière et Rayonnement, LCPMR
Vincent Cros: Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay
Jean-Yves Chauleau: SPEC, CEA, CNRS, Université Paris-Saclay
Nicolas Reyren: Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay
Michel Viret: SPEC, CEA, CNRS, Université Paris-Saclay
Nicolas Jaouen: Synchrotron SOLEIL, Saint-Aubin, Boite Postale 48

Nature Communications, 2022, vol. 13, issue 1, 1-6

Abstract: Abstract Non-collinear spin textures in ferromagnetic ultrathin films are attracting a renewed interest fueled by possible fine engineering of several magnetic interactions, notably the interfacial Dzyaloshinskii-Moriya interaction. This allows for the stabilization of complex chiral spin textures such as chiral magnetic domain walls (DWs), spin spirals, and magnetic skyrmions among others. We report here on the behavior of chiral DWs at ultrashort timescale after optical pumping in perpendicularly magnetized asymmetric multilayers. The magnetization dynamics is probed using time-resolved circular dichroism in x-ray resonant magnetic scattering (CD-XRMS). We observe a picosecond transient reduction of the CD-XRMS, which is attributed to the spin current-induced coherent and incoherent torques within the continuously varying spin texture of the DWs. We argue that a specific demagnetization of the inner structure of the DW induces a flow of spins from the interior of the neighboring magnetic domains. We identify this time-varying change of the DW texture shortly after the laser pulse as a distortion of the homochiral Néel shape toward a transient mixed Bloch-Néel-Bloch texture along a direction transverse to the DW.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-022-28899-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28899-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-28899-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().