Coupled solitons in alternating Heisenberg ferromagnetic chains with a small magnon band gap

Authors
Zhu, SH Huang, GX
Citation
Sh. Zhu et Gx. Huang, Coupled solitons in alternating Heisenberg ferromagnetic chains with a small magnon band gap, CHIN PHYS L, 18(10), 2001, pp. 1316-1318
Citations number
13
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256307X → ACNP
Volume
18
Issue
10
Year of publication
2001
Pages
1316 - 1318
Database
ISI
SICI code
0256-307X(200110)18:10<1316:CSIAHF>2.0.ZU;2-S
Abstract
The coupled soliton excitations in an alternating Heisenberg ferromagnetic chain with a small magnon band gap are considered. Based on a quasi-discret e multiple scale approach, a set of coupled mode equations is derived which describes the dynamics of strongly coupled acoustic upper cut-off and opti cal lower cut-off modes. Coupled magnetic band gap soliton solutions are ex plicitly provided and their frequency properties are discussed.