CONSTABLE, E.; RAYMOND, S.; PETIT, S.; RESSOUCHE, E.; BOURDAROT, F.; DEBRAY, J.; JOSSE, Michaël; FABELO, O.; BERGER, H.; DE BRION, S.; SIMONET, V.

doi:10.1103/PhysRevB.96.014413

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CONSTABLE, E.
Magnétisme et Supraconductivité [NEEL - MagSup]

RAYMOND, S.
Magnétisme et Diffusion Neutronique [MDN]

PETIT, S.
Laboratoire Léon Brillouin [LLB - UMR 12]

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Article de revue

Este ítem está publicado en

Physical Review B. 2017, vol. 96, n° 1, p. 014413

American Physical Society

Resumen en inglés

We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu3Bi(SeO3)2O2Cl, complemented by dielectric and electric polarization measurements. The study clarifies a number of open issues concerning this complex material, whose frustrated interactions on a kagomelike lattice, combined with Dzyaloshinskii-Moriya interactions, are expected to stabilize an exotic canted antiferromagnetic order. In particular, we determine the nature of the structural transition occurring at 115 K, the magnetic structure below 25 K resolved in the updated space group, and the microscopic ingredients at the origin of this magnetic arrangement. This was achieved by an analysis of the measured gapped spin waves, which signifies the need for an unexpected and significant anisotropic exchange beyond the proposed Dzyaloshinskii-Moriya interactions. Finally, we discuss the multiferroic properties of this material with respect to the space group symmetries.< Leer menos

DOI

http://dx.doi.org/10.1103/PhysRevB.96.014413

Proyecto ANR

Effets magnéto-électriques dynamiques : études expérimentale et théorique des excitations hybrides - ANR-13-BS04-0013

Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026