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Metastable and localized Ising magnetism in α − CoV 2 O 6 magnetization plateaus

Edwards, L., Lane, H., Wallington, F., Arevalo-Lopez, A. M., Songvilay, M., Pachoud, E., Niedermayer, Ch., Tucker, G., Manuel, P., Paulsen, C., Lhotel, E., Attfield, J. P., Giblin, S. R. ORCID: https://orcid.org/0000-0003-1876-8619 and Stock, C. 2020. Metastable and localized Ising magnetism in α − CoV 2 O 6 magnetization plateaus. Physical Review B 102 (19) , 195136. 10.1103/PhysRevB.102.195136

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Abstract

α − Co V 2 O 6 consists of j eff = 1 2 Ising spins located on an anisotropic triangular motif with magnetization plateaus in an applied field. We combine neutron diffraction with low temperature magnetization to investigate the magnetic periodicity in the vicinity of these plateaus. We find these steps to be characterized by metastable and spatially short-range ( ξ ∼ 10 Å) magnetic correlations with antiphase boundaries defining a local periodicity of ⟨ ˆ T 2 ⟩ = ↑ ⏐ ⏐ ⏐ ⏐ ↓ to ⟨ ˆ T 3 ⟩ = ↑ ⏐ ⏐ ↑ ⏐ ⏐ ⏐ ⏐ ↓ and ⟨ ˆ T 4 ⟩ = ↑ ⏐ ⏐ ↑ ⏐ ⏐ ⏐ ⏐ ↓ ⏐ ⏐ ↓ or ↑ ↑ ↑ ↓ spin arrangements. This shows the presence of spatially short range and metastable/hysteretic, commensurate magnetism in Ising magnetization steps.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Physical Society
ISSN: 2469-9950
Date of First Compliant Deposit: 23 November 2020
Date of Acceptance: 26 October 2020
Last Modified: 10 Jun 2023 18:32
URI: https://orca.cardiff.ac.uk/id/eprint/136573

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