Local spin Seebeck imaging with scanning thermal probe
| Autor: | Alessandro Sola, Olga Kazakova, Craig Barton, Vittorio Basso, Massimo Pasquale, Carsten Dubs |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Magnon General Physics and Astronomy FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Characterization (materials science) Condensed Matter::Materials Science Magnetization 0103 physical sciences Thermoelectric effect Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Condensed Matter::Strongly Correlated Electrons Texture (crystalline) Magnetic force microscope Diffusion (business) 010306 general physics 0210 nano-technology Spin-½ |
| Popis: | We present the results of an experiment to locally resolve the spin Seebeck effect in a high-quality yttrium iron garnet--Pt sample. We achieve this by using a locally heated scanning thermal probe to generate a highly local nonequilibrium spin current. To support our experimental results, we also present a model based on the nonequilibrium thermodynamic approach that is in a good agreement with the experimental findings. To further corroborate our results, we index the locally resolved spin Seebeck effect with that of the local magnetization texture by magnetic force microscopy and correlate corresponding regions. We hypothesize that this technique allows imaging of magnetization textures within the magnon diffusion length and hence characterization of spin-caloritronic materials at the nanoscale. |
| Databáze: | OpenAIRE |
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