Journal
SCIENTIFIC REPORTS
Volume 11, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-03058-5
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Funding
- Japan Society for the Promotion of Science [18KK0150, 19KK0069, 20K14395, 19H01834]
- CORE Laboratory Research Program Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials of the Network Joint Research Center for Materials and Device
- P220 program of the Government of Russia [075-15-2021-604]
- Russian Science Foundation [19-73-10034]
- Grants-in-Aid for Scientific Research [19KK0069, 20K14395, 19H01834, 18KK0150] Funding Source: KAKEN
- Russian Science Foundation [19-73-10034] Funding Source: Russian Science Foundation
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The magnetic structure of the sawtooth-chain antiferromagnet Fe2Se2O7 was investigated through magnetization measurements, neutron diffraction experiments, and Mossbauer spectra analysis, revealing a nearly collinear antiferromagnetic structure with magnetic moments aligned along the b-axis. The derived magnon dispersion relation suggests the possible flat band nature of magnons.
A magnetic structure of the sawtooth-chain antiferromagnet Fe2Se2O7 was investigated by magnetization measurements, single crystalline and powder neutron diffraction experiments, and a further analysis on the Mossbauer spectra. These experiments revealed a nearly collinear antiferromagnetic structure with magnetic moments aligned along the b-axis, indicating dominant antiferromagnetic exchanges between Fe(1)-Fe(2) and Fe(2)-Fe(3) sites. The magnon dispersion relation derived from the linear spin wave approximation suggests the possible flat band nature of magnons.
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