Lu, Z. orcid.org/0000-0002-9967-5221, Ge, L., Wang, G. et al. (6 more authors) (2018) Lattice distortion effects on the frustrated spin-1 triangular-antiferromagnet A3NiNb2O9 (A=Ba, Sr, and Ca). Physical Review B, 98 (9). 094412. ISSN 2469-9950
Abstract
In geometrically frustrated materials with low-dimensional and small spin moment, the quantum fluctuation can interfere with the complicated interplay of the spin, electron, lattice, and orbital interactions, and host exotic ground states such as the nematic spin state and chiral liquid phase. While the quantum phases of the one-dimensional chain and
S=12 two-dimensional triangular-lattice antiferromagnet (TLAF) have been more thoroughly investigated by both theorists and experimentalists, the work on the S=1 TLAF has been limited. We induced the lattice distortion into the TLAFs A3NiNb2O9 (A=Ba, Sr, and Ca) with S(Ni2+)=1, and applied thermodynamic, magnetic, and neutron scattering measurements. Although A3NiNb2O9 kept the noncollinear 120∘ antiferromagnetic phase as the ground state, the Ni2+ lattice changed from an equilateral triangle (A=Ba) into an isosceles triangle (A=Sr and Ca). The inelastic neutron scattering data were simulated by the linear spin-wave theory, and the competition between the single-ion anisotropy and the exchange anisotropy from the distorted lattice are discussed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 22 Oct 2020 12:54 |
Last Modified: | 22 Oct 2020 12:58 |
Status: | Published |
Publisher: | American Physical Society (APS) |
Refereed: | Yes |
Identification Number: | 10.1103/physrevb.98.094412 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:167055 |