Role of damping in spin Seebeck effect in yttrium iron garnet thin films
Autor: | Mario C. Marconi, Mingzhong Wu, Houchen Chang, Joseph N. Gelfand, Jinjun Ding, P. A. Praveen Janantha, Tao Liu, Wei Li, Kevin Cline |
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Jazyk: | angličtina |
Rok vydání: | 2017 |
Předmět: |
Materials science
Yttrium iron garnet Spin Hall effect 02 engineering and technology 01 natural sciences magnetic thin films chemistry.chemical_compound Condensed Matter::Materials Science Condensed Matter::Superconductivity 0103 physical sciences Thermoelectric effect Thin film 010306 general physics Research Articles Spin-½ Applied Physics Condensed Matter::Quantum Gases Spin pumping Multidisciplinary Condensed matter physics Spintronics SciAdv r-articles 021001 nanoscience & nanotechnology Ferromagnetic resonance Computer Science::Other chemistry ferromagnetic resonance spin Seebeck effect Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Research Article |
Zdroj: | Science Advances |
ISSN: | 2375-2548 |
Popis: | We report an experimental study on how the spin Seebeck effect in magnetic insulators depends on damping. The role of damping in the spin Seebeck effect (SSE) was studied experimentally for the first time. The experiments used Y3Fe5O12 (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. |
Databáze: | OpenAIRE |
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