Details

Autor(en) / Beteiligte

• Sadovnikov, A. V.
• Odintsov, S. A.
• Beginin, E. N.
• Sheshukova, S. E.
• Sharaevskii, Yu. P.
• Nikitov, S. A.

Titel

Toward nonlinear magnonics: Intensity-dependent spin-wave switching in insulating side-coupled magnetic stripes

Ist Teil von

• Physical review. B, 2017-10, Vol.96 (14), Article 144428

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2017

Quelle

APS: American Physical Society E-Journals (Physics)

Beschreibungen/Notizen

• We demonstrate that the nonlinear spin-wave transport in two laterally parallel magnetic stripes exhibit the intensity-dependent power exchange between the adjacent spin-wave channels. By the means of Brillouin light scattering technique, we investigate collective nonlinear spin-wave dynamics in the presence of magnetodipolar coupling. The nonlinear intensity-dependent effect reveals itself in the spin-wave mode transformation and differential nonlinear spin-wave phase shift in each adjacent magnetic stripe. The proposed analytical theory, based on the coupled Ginzburg-Landau equations, predicts the geometry design involving the reduction of power requirement to the all-magnonic switching. A very good agreement between calculation and experiment was found. In addition, a micromagnetic and finite-element approach has been independently used to study the nonlinear behavior of spin waves in adjacent stripes and the nonlinear transformation of spatial profiles of spin-wave modes. Our results show that the proposed spin-wave coupling mechanism provides the basis for nonlinear magnonic circuits and opens the perspectives for all-magnonic computing architecture.