Current-induced spin torque resonance of a magnetic insulator
| Autor: | Michael Schreier, Takahiro Chiba, Arthur Niedermayr, Johannes Lotze, Hans Huebl, Stephan Geprägs, Saburo Takahashi, Gerrit E. W. Bauer, Rudolf Gross, Sebastian T. B. Goennenwein |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Magnetoresistance Yttrium iron garnet FOS: Physical sciences 02 engineering and technology 01 natural sciences chemistry.chemical_compound Condensed Matter::Materials Science 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Spin model 010306 general physics Spin pumping Magnetization dynamics Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Spin polarization 021001 nanoscience & nanotechnology Condensed Matter Physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Ferromagnetic resonance Electronic Optical and Magnetic Materials chemistry Spin Hall effect Condensed Matter::Strongly Correlated Electrons 0210 nano-technology |
| Zdroj: | Physical Review B, 92 (14), 2015 |
| ISSN: | 1098-0121 |
| DOI: | 10.48550/arxiv.1412.7460 |
| Popis: | Pure spin currents transport angular momentum without an associated charge flow. This unique property makes them attractive for spintronics applications, such as torque induced magnetization control in nanodevices that can be used for sensing, data storage, interconnects and logics. Up to now, however, most spin transfer torque studies focused on metallic ferromagnets, while magnetic insulators were largely ignored, in spite of superior magnetic quality factors. Here, we report the observation of spin torque-induced magnetization dynamics in a magnetic insulator. Our experiments show that in ultrathin magnetic insulators the spin torque induced magnetization dynamics can be substantially larger than those generated by the Oersted field. This opens new perspectives for the efficient integration of ferro-, ferri-, and antiferromagnetic insulators into electronic devices. |
| Databáze: | OpenAIRE |
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