2015 CAP Congress / Congrès de l'ACP 2015

Spin pumping in electrodynamically coupled magnon-photon systems

17 Jun 2015, 14:30

15m

NINT Taylor room (University of Alberta)

Oral (Non-Student) / orale (non-étudiant) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) W2-1 Spintronics and spintronic devices (DCMMP) / Spintronique et technologies spintroniques (DPMCM)

Speaker

Dr Lihui Bai (University of Manitoba)

Description

Lihui Bai${}^1$, M. Harder${}^1$, Y. P. Chen${}^2$, X. Fan${}^2$, J. Q. Xiao${}^2$, and C.-M. Hu${}^1$ ${}^1$Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T2N2 and ${}^2$Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA We use electrical detection, in combination with microwave transmission, to investigate both resonant and non-resonant magnon-photon coupling at room temperature. Spin pumping in a dynamically coupled magnon-photon system is found to be distinctly different from previous experiments. Characteristic coupling features such as modes anti-crossing, line width evolution, peculiar line shape, and resonance broadening are systematically measured and consistently analyzed by a theoretical model set on the foundation of classical electrodynamic coupling. Our experimental and theoretical approach pave the way for pursuing microwave coherent manipulation of pure spin current via the combination of spin pumping and magnon-photon coupling.