TY  - JOUR
AU  - Alahmed, Laith
AU  - Zhang, Xiaoqian
AU  - Wen, Jiajia
AU  - Xiong, Yuzan
AU  - Li, Yi
AU  - Zhang, Lichuan
AU  - Lux, Fabian
AU  - Freimuth, Frank
AU  - Mahdi, Muntasir
AU  - Mokrousov, Yuriy
AU  - Novosad, Valentine
AU  - Kwok, Wai-Kwong
AU  - Yu, Dapeng
AU  - Zhang, Wei
AU  - Lee, Young S.
AU  - Li, Peng
TI  - Evidence of Magnon-Mediated Orbital Magnetism in a Quasi-2D Topological Magnon Insulator
JO  - Nano letters
VL  - 22
IS  - 13
SN  - 1530-6984
CY  - Washington, DC
PB  - ACS Publ.
M1  - FZJ-2022-03908
SP  - 5114 - 5119
PY  - 2022
AB  - 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).
LB  - PUB:(DE-HGF)16
C6  - 35699946
UR  - <Go to ISI:>//WOS:000820382100001
DO  - DOI:10.1021/acs.nanolett.2c00562
UR  - https://juser.fz-juelich.de/record/910526
ER  -