Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101609
Title: Large easy-axis anisotropy in the one-dimensional magnet BaMo(PO4)2
Authors: Abdeldaim, A. H.
Badrtdinov, D. I.
Gibbs, A. S.
Manuel, P.
Walker, H. C.
Le, M. D.
Wu, C. H.
Wardecki, D.
Eriksson, S. -G.
Kvashnin, Y. O.
Tsirlin, A. A.
Nilsen, Gø. J.
Issue Date: 2019
Publisher: American Physical Society
Citation: Large easy-axis anisotropy in the one-dimensional magnet BaMo(PO4)2 / A. H. Abdeldaim, D. I. Badrtdinov, A. S. Gibbs, et al. — DOI 10.1103/PhysRevB.100.214427 // Physical Review B. — 2019. — Vol. 100. — Iss. 21. — 214427.
Abstract: We present an extensive experimental and theoretical study on the low-temperature magnetic properties of the monoclinic anhydrous alum compound BaMo(PO4)2. The magnetic susceptibility reveals strong antiferromagnetic interactions θCW=-167K and long-range magnetic order at TN=22K, in agreement with a recent report. Powder neutron diffraction furthermore shows that the order is collinear, with the moments near the ac plane. Neutron spectroscopy reveals a large excitation gap Δ=15meV in the low-temperature ordered phase, suggesting a much larger easy-axis spin anisotropy than anticipated. However, the large anisotropy justifies the relatively high ordered moment, Néel temperature, and collinear order observed experimentally and is furthermore reproduced in a first-principles calculations by using a new computational scheme. We therefore propose BaMo(PO4)2 to host S=1 antiferromagnetic chains with large easy-axis anisotropy, which has been theoretically predicted to realize novel excitation continua. © 2019 American Physical Society.
Keywords: ANISOTROPY
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
CALCULATIONS
MAGNETIC SUSCEPTIBILITY
TEMPERATURE
ANTIFERRO-MAGNETIC INTERACTIONS
ANTIFERROMAGNETIC CHAIN
COMPUTATIONAL SCHEMES
FIRST-PRINCIPLES CALCULATION
LONG RANGE MAGNETIC ORDER
NEUTRON SPECTROSCOPY
ONE-DIMENSIONAL MAGNETS
POWDER NEUTRON DIFFRACTION
ONE DIMENSIONAL
URI: http://hdl.handle.net/10995/101609
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85077496624
PURE ID: 11784737
ISSN: 24699950
DOI: 10.1103/PhysRevB.100.214427
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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