Dzyaloshinsky-Moriya interaction in vesignieite: a route to freezing in a quantum kagome antiferromagnet

Zorko, A., Bert, F., Ozarowski, A., van Tol, J., Boldrin, D. , Wills, A.S. and Mendels, P. (2013) Dzyaloshinsky-Moriya interaction in vesignieite: a route to freezing in a quantum kagome antiferromagnet. Physical Review B, 88(14), 144419. (doi: 10.1103/PhysRevB.88.144419)

Full text not currently available from Enlighten.

Abstract

We report an electron-spin-resonance investigation of the geometrically frustrated spin-1/2 kagome antiferromagnet vesignieite, BaCu 3 V 2 O 8 (OH) 2 . Analysis of the linewidths and line shifts indicates the dominance of in-plane Dzyaloshinsky-Moriya anisotropy that is proposed to suppress strongly quantum spin fluctuations and thus to promote long-range ordering rather than a spin-liquid state. We also evidence an enhanced spin-phonon contribution that might originate from a lattice instability and discuss the origin of a low-temperature mismatch between intrinsic and bulk susceptibility in terms of local inhomogeneity.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Boldrin, Dr David
Authors: Zorko, A., Bert, F., Ozarowski, A., van Tol, J., Boldrin, D., Wills, A.S., and Mendels, P.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review B
Publisher:American Physical Society
ISSN:1098-0121
ISSN (Online):1550-235X
Published Online:22 October 2013

University Staff: Request a correction | Enlighten Editors: Update this record