SOLITARY MAGNON LOCALIZATION AND 2 MAGNON BOUND-STATES IN TYPE-I ANTIFERROMAGNETS

被引：1
|
作者：
LIU, WM
ZHANG, XM
YAN, ZC
ZHOU, BL
机构：
[1] CCAST,WORLD LAB,BEIJING 100080,PEOPLES R CHINA
[2] ACAD SINICA,INST MET RES,SHENYANG 110015,PEOPLES R CHINA
[3] JIUJING TEACHERS COLL,JIUJING 332000,PEOPLES R CHINA
来源：
PHYSICA SCRIPTA | 1994年 / 50卷 / 02期
关键词：
D O I：
10.1088/0031-8949/50/2/014
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Introducing the Dyson-Maleev transformation, the coherent-state ansatz and the time-dependent variation principle, we obtain two partial differential equations of motion in type-I antiferromagnets. Employing the method of multiple scales, we reduce these equations into the envelope function equations and force the amplitude function to satisfy a nonlinear Schrodinger equation. Using the inverse-scattering transformation, we discuss solitary magnon localization, two magnon bound states. and gap solitons.
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页码：181 / 186
页数：6
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