Theoretical investigation of nonlinear damping and nonlinear phase shift of spin-electromagnetic waves propagating in infinite multiferroics at sub-terahertz frequencies

17th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Ustinova, I.A.^1 ; Cherkasskii, M.A.^1 ; Ustinov, A.B.^1 ; Kalinikos, B.A.^1

Department of Physical Electronics and Technology, St.Petersburg Electrotechnical University, 5 Popov Street, St.Petersburg

197376, Russia^1

关键词: Ginzburg-Landau equations;    Multiferroics;    Nonlinear damping;    Nonlinear phase shift;    Sub-terahertz;    Theoretical investigations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/661/1/012050/pdf
DOI  :  10.1088/1742-6596/661/1/012050

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The nonlinear phase shift and nonlinear damping of spin-electromagnetic waves were theoretically studied for the first time in sub-terahertz frequency range in infinite homogeneous longitudinal magnetized multiferroics. The research was based on the solution of the Ginzburg-Landau equation. It is shown that the saturation of the phase shift occurs due to the nonlinear damping if the nonlinear damping coefficients exceed v1=108s-1and v2=109s-1.