محمدرضا كريمي

In this thesis, the coupling between spin waves an‎d lattice elastic vibrations in a magnetic insulator with electromagnetic waves in a microwave cavity is investigated. First, the coupled magnetic-insulator–cavity system is modeled using Maxwellʹs equations an‎d the magnetization dynamics equation, namely the Lan‎dau–Lifshitz–Gilbert (LLG) equation. Next, the influence of lattice vibration dynamics, through magnetoelastic interaction, on the magnetization dynamics is examined. In the final step, the interaction between magnetoelastic dynamics in the magnetic insulator an‎d electromagnetic waves in the microwave cavity, known as the cavity magnomechanical system, is explored. The obtained results demonstrate that achieving a strong-coupling regime in this system is readily feasible. Moreover, the dependence of the coupling strength on the thickness of the magnetic insulator an‎d the cavity filling factor is analyzed. These findings provide a new perspective for designing hybrid quantum systems an‎d enable control over the interactions among different degrees of freedom in such systems.

كاواك ماكروويو , عايق مغناطيسي , مگنون , فونون , برهمكنش مغناطوكشساني , مگنومكانيك كاواكي

Microwave Cavity , Magnetic Insulator , Magnon , Phonon , Magnetoelastic Interactions , Cavity Magnomechanics

Mohammad Reza Karimi

Babak Zare