Novel nonlinear excitations in ferromagnet excited by all-magnonic spin-transfer torque

National Conference on Theory of Magnetism

Li, Zai-Dong^1 ; Li, Qiu-Yan^1 ; Liu, W.M.^2

Department of Applied Physics, Hebei University of Technology, Tianjin

300401, China^1

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing

100080, China^2

关键词: Density distributions;    Ferromagnets;    Formation mechanism;    Magnetic solitons;    Magnonic spin transfer torques;    Nonlinear excitation;    Periodic process;    Rogue waves;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/827/1/012002/pdf
DOI  :  10.1088/1742-6596/827/1/012002

来源: IOP

【 摘 要 】

We report the novel nonlinear excitations, such as Akhmediev breathers solution and Kuznetsov-Ma soliton caused by a spin wave passing through a magnetic soliton. The former case demonstrates a spatial periodic process of a magnetic soliton. The other case shows a localized process of the spin-wave background. In the limit case, we get the novel rogue waves with high magnon density distribution and clarify its formation mechanism.