Journal Article

FZJ-2022-03908

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Evidence of Magnon-Mediated Orbital Magnetism in a Quasi-2D Topological Magnon Insulator

Alahmed, L. ; Zhang, X. ; Wen, J. (Corresponding author) ; Xiong, Y. ; Li, Y. (Corresponding author) ; Zhang, L.FZJ* ; Lux, F. ; Freimuth, F.FZJ* ; Mahdi, M. ; Mokrousov, Y. (Corresponding author)FZJ* ; Novosad, V. ; Kwok, W.-K. ; Yu, D. ; Zhang, W. (Corresponding author) ; Lee, Y. S. ; Li, P. (Corresponding author)

2022
ACS Publ. Washington, DC

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Please use a persistent id in citations: http://hdl.handle.net/2128/32197  doi:10.1021/acs.nanolett.2c00562

Abstract: We explore spin dynamics in Cu(1,3-bdc), a quasi-2D topological magnon insulator. The results show that the thermal evolution of the Landé g factor (g) is anisotropic: gin-plane decreases while gout-of-plane increases with increasing temperature T. Moreover, the anisotropy of the g factor (Δg) and the anisotropy of saturation magnetization (ΔMs) are correlated below 4 K, but they diverge above 4 K. We show that the electronic orbital moment contributes to the g anisotropy at lower T, while the topological orbital moment induced by thermally excited spin chirality dictates the g anisotropy at higher T. Our work suggests an interplay among topology, spin chirality, and orbital magnetism in Cu(1,3-bdc).

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)

Appears in the scientific report 2022

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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