FRUSTRATED HONEYCOMB HEISENBERG-ANTIFERROMAGNET - A SCHWINGER-BOSON APPROACH

Authors
MATTSSON A FROJDH P EINARSSON T
Citation
A. Mattsson et al., FRUSTRATED HONEYCOMB HEISENBERG-ANTIFERROMAGNET - A SCHWINGER-BOSON APPROACH, Physical review. B, Condensed matter, 49(6), 1994, pp. 3997-4002
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
49
Issue
6
Year of publication
1994
Pages
3997 - 4002
Database
ISI
SICI code
0163-1829(1994)49:6<3997:FHH-AS>2.0.ZU;2-2
Abstract
We analyze the frustrated Heisenberg antiferromagnet defined on a hone ycomb lattice using a Schwinger-boson mean-field theory. The spin-wave velocity and the susceptibility are presented as functions of the str ength of the frustrating interaction for spin S=1/2, and the dynamic s tructure factor is calculated for various temperatures and frustration s. For large S, we find an increased Neel stability with respect to th e classical case.