Current-induced spin torque resonance of magnetic insulators
| Autor: | Takahiro Chiba, Gerrit E. W. Bauer, Saburo Takahashi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Condensed Matter::Materials Science
Condensed Matter - Mesoscale and Nanoscale Physics 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Physics and Astronomy FOS: Physical sciences Condensed Matter::Strongly Correlated Electrons 02 engineering and technology 021001 nanoscience & nanotechnology 010306 general physics 0210 nano-technology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences |
| Zdroj: | Physical Review Applied, 2 (3), 2014 |
| ISSN: | 2331-7019 |
| Popis: | We formulate a theory of the AC spin Hall magnetoresistance (SMR) in a bilayer system consisting of a magnetic insulator such as yttrium iron garnet (YIG) and a heavy metal such as platinum (Pt). We derive expressions for the DC voltage generation based on the drift-diffusion spin model and quantum mechanical boundary condition at the interface that reveal a spin torque ferromagnetic resonance (ST-FMR). We predict that ST-FMR experiments will reveal valuable information on the current-induced magnetization dynamics of magnetic insulators and AC spin Hall effect. 5 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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