[2312.15961] Magnon Damping as a Probe of Kondo Coupling in Magnetically Ordered Systems Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Condensed Matter > Strongly Correlated Electrons arXiv:2312.15961 (cond-mat) [Submitted on 26 Dec 2023 ( v1 ), last revised 24 Apr 2026 (this version, v2)] Title: Magnon Damping as a Probe of Kondo Coupling in Magnetically Ordered Systems Authors: Song Bao , Junsen Wang , Shin-ichiro Yano , Yanyan Shangguan , Zhentao Huang , Junbo Liao , Wei Wang , Yuan Gao , Bo Zhang , Shufan Cheng , Hao Xu , Zhao-Yang Dong , Shun-Li Yu , Wei Li , Jian-Xin Li , Jinsheng Wen View a PDF of the paper titled Magnon Damping as a Probe of Kondo Coupling in Magnetically Ordered Systems, by Song Bao and 14 other authors View PDF HTML (experimental) Abstract: In $d$-electron systems, there can also be intricate interplay between Kondo coupling and magnetic interactions as that in $f$-electron systems, but the underlying mechanism remains elusive. Here, using inelastic neutron scattering, we investigate the temperature evolution of the low-energy spin waves (magnons) in a metallic van der Waals ferromagnet Fe$_{3-x}$GeTe$_{2}$, and observe that the magnon damping diverges at both low and high temperatures and exhibits a minimum at an intermediate temperature. These behaviours are described by a formula that combines logarithmic and power-law terms, representing the dominant contributions from Kondo coupling and thermal fluctuations, respectively. These findings can be explained by considering electron-magnon scattering of spin-flip type within the ferromagnetic Kondo-Heisenberg lattice model, distinct from the original Kondo effect which only considers the coupling between itinerant electrons and isolated impurity spins. These results unveil the intriguing interplay between itinerant electrons and spin waves in metallic 3$d$-electron systems with magnetic order, and provide magnon damping as a new effective probe of Kondo coupling in metallic quantum magnets, thereby opening new avenues for exploring Kondo physics from the magnon perspective. Comments: Published in Nature Communications Subjects: Strongly Correlated Electrons (cond-mat.str-el) ; Superconductivity (cond-mat.supr-con) Cite as: arXiv:2312.15961 [cond-mat.str-el] (or arXiv:2312.15961v2 [cond-mat.str-el] for this version) https://doi.org/10.48550/arXiv.2312.15961 Focus to learn more arXiv-issued DOI via DataCite Journal reference: Nat. Commun. 17, 3557 (2026) Related DOI : https://doi.org/10.1038/s41467-026-70241-5 Focus to learn more DOI(s) linking to related resources Submission history From: Jinsheng Wen Mr.Dr.Prof. [ view email ] [v1] Tue, 26 Dec 2023 08:50:35 UTC (2,754 KB) [v2] Fri, 24 Apr 2026 01:40:19 UTC (3,070 KB) Full-text links: Access Paper: View a PDF of the paper titled Magnon Damping as a Probe of Kondo Coupling in Magnetically Ordered Systems, by Song Bao and 14 other authors View PDF HTML (experimental) TeX Source view license Current browse context: cond-mat.str-el < prev | next > new | recent | 2023-12 Change to browse by: cond-mat cond-mat.supr-con References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... 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