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

[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.

[发布机构] Department of Physical Electronics and Technology, St.Petersburg Electrotechnical University, 5 Popov Street, St.Petersburg; 197376, Russia^1

[效力级别] 天文学 [学科分类] 天文学(综合)

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