SCHWINGER-BOSON MEAN-FIELD THEORY OF SPIN-1 2 2D ANTIFERROMAGNET/

Authors
WU HS WU MW
Citation
Hs. Wu et Mw. Wu, SCHWINGER-BOSON MEAN-FIELD THEORY OF SPIN-1 2 2D ANTIFERROMAGNET/, Zeitschrift fur Physik. B, Condensed matter, 93(2), 1994, pp. 151-154
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Zeitschrift fur Physik. B, Condensed matter → ACNP
ISSN journal
07223277
Volume
93
Issue
2
Year of publication
1994
Pages
151 - 154
Database
ISI
SICI code
0722-3277(1994)93:2<151:SMTOS2>2.0.ZU;2-3
Abstract
A consistent Schwinger-boson mean field theory is developed for a spin -1/2 2D antiferromagnet. It predicts that there are two branches of th e Schwinger-boson excitation spectrum: an acoustic branch, essentially the same as that predicted by Arovas and Auerbach theory, and a new o ptical branch. The present theory provides a natural explanation of th e mystery of the Raman ''two magon'' scattering from La2CuO4.