Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
Abstract
We use electrical detection, in combination with microwave transmission, to investigate both resonant and nonresonant 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 anticrossing, linewidth 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 paves the way for pursuing microwave coherent manipulation of pure spin current via the combination of spin pumping and magnon-photon coupling.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 2015
- DOI:
- arXiv:
- arXiv:1504.01335
- Bibcode:
- 2015PhRvL.114v7201B
- Keywords:
-
- 85.75.-d;
- 42.50.Dv;
- 71.36.+c;
- 76.50.+g;
- Magnetoelectronics;
- spintronics: devices exploiting spin polarized transport or integrated magnetic fields;
- Nonclassical states of the electromagnetic field including entangled photon states;
- quantum state engineering and measurements;
- Polaritons;
- Ferromagnetic antiferromagnetic and ferrimagnetic resonances;
- spin-wave resonance;
- Condensed Matter - Materials Science;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 5 pages, 3 figures