Role of damping in spin Seebeck effect in yttrium iron garnet thin films.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 28435873.
- Also identified by DOI 10.1126/sciadv.1601614 and PMC identifier 5384803.
- Licence recorded as CC BY-NC.
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Abstract
The role of damping in the spin Seebeck effect (SSE) was studied experimentally for the first time. The experiments used Y<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> (YIG)/Pt bilayered structures where the YIG films exhibit very similar structural and static magnetic properties but very different damping. The data show that a decrease in the damping gives rise to an increase in the SSE coefficient, which is qualitatively consistent with some of the theoretical models. This response also shows quasi-linear behavior, which was not predicted explicitly by previous studies. The data also indicate that the SSE coefficient shows no notable correlations with the enhanced damping due to spin pumping, which can be understood in the frame of two existing models.