Towards Topological Magnons for Hybrid Magnonic Systems

Here I will present results from our theoretical investigation into the implementation of topological magnons for hybrid magnonic systems [1]. I will begin by discussing the coupling between an NV spin center and bulk magnons in a ferromagnetic honeycomb lattice. Special attention will be paid to the rate at which excited magnons decohere/destroy the stored information in the NV centers. Next, I will discuss topological magnons in a honeycomb Heisenberg ferromagnet with Dzyaloshinskii-Moriya interaction (DMI) and easy-axis anisotropy [2]. Finally, I will merge these two analyses and discuss future work, outlining ways in which topological magnons can be used to couple to NV centers and presenting preliminary results.

[1] Bence Hetényi, Alexander Mook, Jelena Klinovaja, and Daniel Loss Phys. Rev. B 106, 235409

[2] Hongseok Kim and Se Kwon Kim Phys. Rev. B 106, 104430