Unraveling energy dissipation dynamics in 2D coplanar magnonic cavities: Insights into mode interactions and resonance phenomena

Abstract

This study investigates the intricate dynamics of energy dissipation in a two-dimensional coplanar magnonic cavity structure, driven by the cavity Lenz effect. We examine the interactions between coupled photonic modes, specifically the dipole (D) and quadrupole (Q) modes, and a magnon mode within the system, aiming to uncover the mechanisms governing dissipation processes. Analysis of the transmission spectrum reveals a fascinating degeneracy between the perpendicular D-mode and the Q-mode, providing new insights into the interplay between dissipation and system behavior. Through theoretical exploration, we detail the resonance phenomena involving the magnon mode, the external photon bath frequency, and the microwave cavity mode, offering a deeper understanding of the complex energy loss dynamics. Our findings emphasize the importance of strategies to minimize energy dissipation and enhance light absorption in magnonic cavities, paving the way for advancements in nanoscale energy harvesting technologies. Moreover, reducing energy loss in these systems will facilitate the development of next-generation optoelectronic and electronic devices.