Spin pumping from spinwaves in thin film YIG
Abstract
We report on the efficiency of spin pumping from parametrically excited propagating high-k spinwaves in a YIG(25 nm)/Pt(5 nm) bilayer. We observe clear signals, detected using the inverse spin Hall effect. The measured spin pumping efficiency and microwave thresholds needed for parametric excitation indicate that spin pumping is insensitive to the spinwave wavevector magnitude and propagation direction in the range 0≤k≲20 μm−1. This finding is consistent with the fact that for thin films, the variation of spin wave amplitude across the film thickness is only weakly dependent on the wavevector. Our results are promising for the development of spin-based devices operated by spinwaves.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 27, 2015
- Source ID
- 10.1063/1.4927451
Entities
People
- C. H. Du
- Fengyuan Yang
- Hao Wang
- P. C. Hammel
- R. Adur
- S. A. Manuilov
- V. P. Bhallamudi
Organizations
- Army Research Office
- National Science Foundation
- Ohio State University
- United States Department of Energy