Coupled Solitons in Alternating Heisenberg Ferromagnetic Chains with a Small Magnon Band Gap
ZHU Shan-Hua1,2, HUANG Guo-Xiang1
1Key Laboratory for Optical and Magnetic Resonance Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062
2Physics Group, Zhuzhou Institute of Technology, Zhuzhou 412008
Coupled Solitons in Alternating Heisenberg Ferromagnetic Chains with a Small Magnon Band Gap
ZHU Shan-Hua1,2;HUANG Guo-Xiang1
1Key Laboratory for Optical and Magnetic Resonance Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062
2Physics Group, Zhuzhou Institute of Technology, Zhuzhou 412008
Abstract： The coupled soliton excitations in an alternating Heisenberg ferromagnetic chain with a small magnon band gap are considered. Based on a quasi-discrete multiple scale approach, a set of coupled mode equations is derived which describe the dynamics of strongly coupled acoustic upper cut-off and optical lower cut-off modes. Coupled magnetic band gap soliton solutions are explicitly provided and their frequency properties are discussed.
ZHU Shan-Hua;HUANG Guo-Xiang. Coupled Solitons in Alternating Heisenberg Ferromagnetic Chains with a Small Magnon Band Gap[J]. 中国物理快报, 2001, 18(10): 1316-131.
ZHU Shan-Hua, HUANG Guo-Xiang. Coupled Solitons in Alternating Heisenberg Ferromagnetic Chains with a Small Magnon Band Gap. Chin. Phys. Lett., 2001, 18(10): 1316-131.
2001, Vol. 18 
