Spin-wave interaction and renormalization of magnetic anisotropy in 2D antiferromagnets

Authors
Maleyev, SV
Citation
Sv. Maleyev, Spin-wave interaction and renormalization of magnetic anisotropy in 2D antiferromagnets, PHYS REV L, 85(15), 2000, pp. 3281-3284
Citations number
14
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
15
Year of publication
2000
Pages
3281 - 3284
Database
ISI
SICI code
0031-9007(20001009)85:15<3281:SIAROM>2.0.ZU;2-J
Abstract
The renormalization of the magnetic anisotropy is investigated in 2D easy-a xis antiferromagnets using 1/S expansion. It was shown that in the spin-wav e gap Delta appears as the 1/S-2 infrared divergent correction which become s large at T > Delta and demands analysis of the full 1/S expansion. Qualit ative consequences of this gap renormalization are discussed in relation to the AFR and neutron scattering experiments.