Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)2O2Cl

被引：35

作者：

Constable, E. ^{[1
,2
,3
]}

Raymond, S. ^{[4
,5
]}

Petit, S. ^{[6
]}

Ressouche, E. ^{[4
,5
]}

Bourdarot, F. ^{[4
,5
]}

Debray, J. ^{[1
,2
]}

Josse, M. ^{[7
]}

Fabelo, O. ^{[8
]}

Berger, H. ^{[9
]}

deBrion, S. ^{[1
,2
]}

Simonet, V. ^{[1
,2
]}

机构：

[1] CNRS, Inst Neel, F-38042 Grenoble, France

[2] Univ Grenoble Alpes, F-38042 Grenoble, France

[3] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[4] CEA Grenoble, Lab Modelisat & Explorat Mat, INAC, F-38054 Grenoble, France

[5] Univ Grenoble Alpes, F-38054 Grenoble, France

[6] Univ Paris Saclay, CNRS, CEA, Lab Leon Brillouin,CE Saclay, F-91191 Gif Sur Yvette, France

[7] Univ Bordeaux, ICMCB, CNRS, UPR 9048, F-33600 Pessac, France

[8] Inst Laue Langevin, CS 20156, F-38042 Grenoble, France

[9] Ecole Polytech Fed Lausanne, Inst Phys, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 01期

关键词：

BILBAO CRYSTALLOGRAPHIC SERVER; POWDER DIFFRACTION; ANTIFERROMAGNET; CRYSTAL;

D O I：

10.1103/PhysRevB.96.014413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu3Bi(SeO3)(2)O2Cl, 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.

引用

页数：12

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