Citation
Wh. Zheng et al., Metaplaquette expansion for the triplet excitation spectrum in CaV4O9, PHYS REV B, 58(21), 1998, pp. 14147-14150
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829
→ ACNP
Volume
58
Issue
21
Year of publication
1998
Pages
14147 - 14150
Database
ISI
SICI code
0163-1829(199812)58:21<14147:MEFTTE>2.0.ZU;2-1
Abstract
We study antiferromagnetic, S=1/2 Heisenberg models with nearest- and secon
d-neighbor interactions on the one-fifth depleted square lattice which desc
ribes the spin degrees of freedom in the spin-gap system CaV4O9. The metapl
aquette expansion for the triplet excitation spectrum is extended to fifth
order, and the results are compared with experimental data on CaV4O9. We at
tempt to locate the phase boundary between magnetically ordered and gapped
phases. [S0163-1829(98)02146-8].