Journal Article

FZJ-2024-01785

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnons in a two-dimensional Weyl magnet

Chen, Y.-J. (Corresponding author)FZJ* ; Chuang, T.-H. ; Hanke, J.-P. ; Mokrousov, Y.FZJ* ; Blügel, S.FZJ* ; Schneider, C. M.FZJ* ; Tusche, C. (Corresponding author)FZJ*

2024
American Inst. of Physics Melville, NY

This record in other databases:  

Please use a persistent id in citations: doi:10.1063/5.0195222  doi:10.34734/FZJ-2024-01785

Abstract: The discovery of topological states of matter has led to a revolution in condensed-matter science. While a non-trivial band topology in a material is often associated with intriguing transport properties, much less attention has been given to the impact on spin dynamics and non-equilibrium magnetization states. Here, we provide evidence that a chiral asymmetric magnon dispersion in the two-dimensional Weyl magnet Fe/W(110) is related to the presence of Weyl fermions close to the Fermi energy and surface Fermi arcs. We find that the large anomalous Hall conductivity and the Dzyaloshinskii–Moriya interaction are attributed to the non-trivial band topology in the composite momentum-magnetization space. Our results show the direct impact of Weyl fermions on both the charge and spin dynamics in a two-dimensional magnet. Unveiling these principles can promote innovative technologies in magnonics by utilizing topological materials, where magnons and non-trivial topological electronic states can be manipulated through magnetization.

---

Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)
2. Elektronische Eigenschaften (PGI-6)
3. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. DFG project 444844585 - Statische und dynamische Kopplung von Gitter- und elektronischen Freiheitsgraden in magnetisch geordneten Übergangsmetalldichalkogenieden (B06) (444844585) (444844585)

Appears in the scientific report 2024

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Web of Science Core Collection

---