A puzzling insensitivity of magnon spin diffusion to the presence of 180-degree domain walls

Ruofan Li, Lauren J. Riddiford, Yahong Chai, Minyi Dai, Hai Zhong, Bo Li, Peng Li, Di Yi, Yuejie Zhang, David A. Broadway, Adrien E. E. Dubois, Patrick Maletinsky, Jiamian Hu, Yuri Suzuki, Daniel C. Ralph () and Tianxiang Nan ()
Additional contact information
Ruofan Li: Cornell University
Lauren J. Riddiford: Stanford University
Yahong Chai: Tsinghua University
Minyi Dai: University of Wisconsin-Madison
Hai Zhong: Qnami AG
Bo Li: Tsinghua University
Peng Li: Stanford University
Di Yi: Stanford University
Yuejie Zhang: Tsinghua University
David A. Broadway: University of Basel
Adrien E. E. Dubois: Qnami AG
Patrick Maletinsky: Qnami AG
Jiamian Hu: University of Wisconsin-Madison
Yuri Suzuki: Stanford University
Daniel C. Ralph: Cornell University
Tianxiang Nan: Cornell University

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract We present room-temperature measurements of magnon spin diffusion in epitaxial ferrimagnetic insulator MgAl0.5Fe1.5O4 (MAFO) thin films near zero applied magnetic field where the sample forms a multi-domain state. Due to a weak uniaxial magnetic anisotropy, the domains are separated primarily by 180° domain walls. We find, surprisingly, that the presence of the domain walls has very little effect on the spin diffusion – nonlocal spin transport signals in the multi-domain state retain at least 95% of the maximum signal strength measured for the spatially-uniform magnetic state, over distances at least five times the typical domain size. This result is in conflict with simple models of interactions between magnons and static domain walls, which predict that the spin polarization carried by the magnons reverses upon passage through a 180° domain wall.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-023-38095-3 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:14:y:2023:i:1:d:10.1038_s41467-023-38095-3

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

DOI: 10.1038/s41467-023-38095-3

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 ().