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1 PublicationRole of alkaline metal in the rare-earth triangular antiferromagnet KYbO2
Grußler, F.; Hemmida, M.; Bachus, S.; Skourski, Y.; Krug Von Nidda, H.-A.; Gegenwart, P.; Tsirlin, A. A.
Abstract
We report crystal structure and magnetic behavior of the triangular antiferromagnet KYbO2, the A-site substituted version of the quantum spin liquid candidate NaYbO2. The replacement of Na by K introduces an anisotropic tensile strain with 1.6% in-plane and 12.1% out-of-plane lattice expansion. Compared to NaYbO2, both Curie-Weiss temperature and saturation field are reduced by about 20% as the result of the increased Yb-O-Yb angles, whereas the g tensor of Yb3+ becomes isotropic with g = 3.08(3). Field-dependent magnetization shows the plateau at 1/2 of the saturated value and suggests the formation of the up-up-up-down field-induced order in KYbO2 in contrast to the more common 1/3 plateau with the up-up-down order that has been reported in the isostructural Yb3+ selenides.
Involved research facilities
- High Magnetic Field Laboratory (HLD)
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Physical Review B 107(2023), 224416
DOI: 10.1103/PhysRevB.107.224416
arXiv: https://doi.org/10.48550/arXiv.2303.12448
Cited 3 times in Scopus
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Permalink: https://www.hzdr.de/publications/Publ-37324