Nonlinear dynamics of a continuum Heisenberg spin chain with an anisotropy and an external magnetic field
文献类型：期刊论文
| 作者 | Pu, FC; Liu, WM; Yang, SL; Huang, NN; Liu, WM , CHINA CTR ADV SCI & TECHNOL, WORLD LAB, POB 8730, BEIJING 100080, PEOPLES R CHINA. |
| 刊名 | ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER
 |
| 出版日期 | 1997 |
| 卷号 | 103期号:1页码:105-114 |
| 关键词 | Landau-lifschitz Equation Riemann Boundary-problem Linear Schrodinger-equation Inverse Scattering Problem Easy-plane Soliton-solutions Excitations Transformation Equivalence Ferromagnet |
| ISSN号 | 0722-3277 |
| 英文摘要 | By stereographically projecting the spin vector onto a complex plane in the equations of motion for a continuum Heisenbeg spin chain with an anisotropy (an easy plane and an easy axis) and an external magnetic field, the effect of the magnetic field for integrability of the system is discussed. Then, introducing an auxiliary parameter, the Lax equations for Darboux matrices are generated recursively. By choosing the constants, the Jest solutions are satisfied the corresponding Lax equations. The exact soliton solutions are investigated, then the total magnetic momentum and its z-component are obtained. These results show that the solitary waves depend essentially on two velocities which describe a spin configuration deviating from a homogeneous magnetization, The depths and widths of solitary waves vary periodically with time. The center of an inhomogeneity moves with a constant velocity, while the shape of soliton also changes with another velocity and this shape is not symmetrical with respect to the center. The total magnetic momentum and its z-component vary with time. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:A1997WZ51800017 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/12483]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Liu, WM , CHINA CTR ADV SCI & TECHNOL, WORLD LAB, POB 8730, BEIJING 100080, PEOPLES R CHINA. |
| 推荐引用方式 GB/T 7714 | Pu, FC,Liu, WM,Yang, SL,et al. Nonlinear dynamics of a continuum Heisenberg spin chain with an anisotropy and an external magnetic field[J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER,1997,103(1):105-114. |
| APA | Pu, FC,Liu, WM,Yang, SL,Huang, NN,&Liu, WM , CHINA CTR ADV SCI & TECHNOL, WORLD LAB, POB 8730, BEIJING 100080, PEOPLES R CHINA..(1997).Nonlinear dynamics of a continuum Heisenberg spin chain with an anisotropy and an external magnetic field.ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER,103(1),105-114. |
| MLA | Pu, FC,et al."Nonlinear dynamics of a continuum Heisenberg spin chain with an anisotropy and an external magnetic field".ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER 103.1(1997):105-114. |
入库方式： OAI收割
来源：理论物理研究所
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