Abundant Soliton Structures to the (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M1"> <a:mn>2</a:mn> <a:mo>+</a:mo> <a:mn>1</a:mn> </a:math>)-Dimensional Heisenberg Ferromagnetic Spin Chain Dynamical Model
Kang‐Jia Wang, Feng Shi, Guo‐Dong Wang
Abstract
In this paper, we aim to investigate the ( <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" id="M2"> <a:mn>2</a:mn> <a:mo>+</a:mo> <a:mn>1</a:mn> </a:math> )-dimensional Heisenberg ferromagnetic spin chain equation that is used to describe the nonlinear dynamics of magnets. Two recent effective technologies, namely, the variational method and subequation method, are employed to construct the abundant soliton solutions. By these two methods, diverse solutions such as the bright soliton, dark soliton, bright-dark soliton, perfect periodic soliton, and singular periodic soliton are successfully extracted. The numerical results are illustrated in the form of 3-D plots and 2-D curves by choosing proper parametric values to interpret the dynamics of wave profiles. Finally, the physical interpretation of the acquired results is elaborated in detail. The results obtained in this study are helpful to explain some physical meanings of some nonlinear physical models in electromagnetic waves.