Faster chiral versus collinear magnetic order recovery after optical excitation revealed by femtosecond XUV scattering

Nico Kerber, Dmitriy Ksenzov, Frank Freimuth, Flavio Capotondi, Emanuele Pedersoli, Ignacio Lopez-Quintas, Boris Seng, Joel Cramer, Kai Litzius, Daniel Lacour, Hartmut Zabel, Yuriy Mokrousov, Mathias Kläui () and Christian Gutt ()
Additional contact information
Nico Kerber: Institut für Physik, Johannes Gutenberg-Universität Mainz
Dmitriy Ksenzov: Universität Siegen
Frank Freimuth: Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA
Flavio Capotondi: Elettra-Sincrotrone Trieste
Emanuele Pedersoli: Elettra-Sincrotrone Trieste
Ignacio Lopez-Quintas: Elettra-Sincrotrone Trieste
Boris Seng: Institut für Physik, Johannes Gutenberg-Universität Mainz
Joel Cramer: Institut für Physik, Johannes Gutenberg-Universität Mainz
Kai Litzius: Institut für Physik, Johannes Gutenberg-Universität Mainz
Daniel Lacour: Institut Jean Lamour, UMR CNRS 7198, Université de Lorraine
Hartmut Zabel: Institut für Physik, Johannes Gutenberg-Universität Mainz
Yuriy Mokrousov: Institut für Physik, Johannes Gutenberg-Universität Mainz
Mathias Kläui: Institut für Physik, Johannes Gutenberg-Universität Mainz
Christian Gutt: Universität Siegen

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract While chiral spin structures stabilized by Dzyaloshinskii-Moriya interaction (DMI) are candidates as novel information carriers, their dynamics on the fs-ps timescale is little known. Since with the bulk Heisenberg exchange and the interfacial DMI two distinct exchange mechanisms are at play, the ultrafast dynamics of the chiral order needs to be ascertained and compared to the dynamics of the conventional collinear order. Using an XUV free-electron laser we determine the fs-ps temporal evolution of the chiral order in domain walls in a magnetic thin film sample by an IR pump - X-ray magnetic scattering probe experiment. Upon demagnetization we observe that the dichroic (CL-CR) signal connected with the chiral order correlator mzmx in the domain walls recovers significantly faster than the (CL + CR) sum signal representing the average collinear domain magnetization mz2 + mx2. We explore possible explanations based on spin structure dynamics and reduced transversal magnetization fluctuations inside the domain walls and find that the latter can explain the experimental data leading to different dynamics for collinear magnetic order and chiral magnetic order.

Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-020-19613-z 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:11:y:2020:i:1:d:10.1038_s41467-020-19613-z

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

DOI: 10.1038/s41467-020-19613-z

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 ().