Long-range antiferromagnetic order in the S=1 chain compound LiVGe2O6

Authors
Lumsden, MD Granroth, GE Mandrus, D Nagler, SE Thompson, JR Castellan, JP Gaulin, BD
Citation
Md. Lumsden et al., Long-range antiferromagnetic order in the S=1 chain compound LiVGe2O6, PHYS REV B, 62(14), 2000, pp. R9244-R9247
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
14
Year of publication
2000
Pages
R9244 - R9247
Database
ISI
SICI code
0163-1829(20001001)62:14<R9244:LAOITS>2.0.ZU;2-G
Abstract
The phase transition in the compound LiVGe2O6 has been proposed as a unique example of a spin-Peierls transition in an S=1 antiferromagnetic chain. We report neutron- and x-ray-diffraction measurements of LiVGe2O6 above and b elow the phase transition at T=24 K. No evidence is seen for any structural distortion associated with the transition. The neutron results indicate th at the low-temperature state is antiferromagnetic, driven by ferromagnetic interchain couplings.