SPIN STIFFNESS OF 2D ISOTROPIC HEISENBERG-ANTIFERROMAGNET

Authors
QI J JI YJ LI MR GONG CD
Citation
J. Qi et al., SPIN STIFFNESS OF 2D ISOTROPIC HEISENBERG-ANTIFERROMAGNET, Communications in Theoretical Physics, 29(3), 1998, pp. 347-350
Citations number
12
Categorie Soggetti
Physics
Journal title
Communications in Theoretical Physics → ACNP
ISSN journal
02536102
Volume
29
Issue
3
Year of publication
1998
Pages
347 - 350
Database
ISI
SICI code
0253-6102(1998)29:3<347:SSO2IH>2.0.ZU;2-8
Abstract
The spin stiffness of spin-1/2 two-dimensional isotropic Heisenberg an tiferromagnet is calculated by a perturbation method based on the exte nded Schwinger-Boson mean-field theory. We arrive at a value of the sp in stiffness, rho(s) = 0.176J, which is in quite well agreement with e xperiments and the numerical results.