Spin current generation from sputtered Y3Fe5O12 films
| Autor: | Ken-ichi Uchida, Takashi Kikkawa, Eiji Saitoh, Zhiyong Qiu, Ryo Iguchi, Yuki Shiomi, J. Lustikova |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Spin pumping
Condensed Matter - Materials Science Materials science Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Yttrium iron garnet General Physics and Astronomy Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Sputter deposition Ferromagnetic resonance chemistry.chemical_compound Condensed Matter::Materials Science chemistry Ferromagnetism Electrical resistivity and conductivity Sputtering Thermoelectric effect Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Condensed Matter::Strongly Correlated Electrons |
| DOI: | 10.48550/arxiv.1410.5987 |
| Popis: | Spin current injection from sputtered yttrium iron garnet (YIG) films into an adjacent platinum layer has been investigated by means of the spin pumping and the spin Seebeck effects. Films with a thickness of 83 and 96 nanometers were fabricated by on-axis magnetron rf sputtering at room temperature and subsequent post-annealing. From the frequency dependence of the ferromagnetic resonance linewidth, the damping constant has been estimated to be $(7.0\pm1.0)\times 10^{-4}$. Magnitudes of the spin current generated by the spin pumping and the spin Seebeck effect are of the same order as values for YIG films prepared by liquid phase epitaxy. The efficient spin current injection can be ascribed to a good YIG|Pt interface, which is confirmed by the large spin-mixing conductance $(2.0\pm0.2)\times 10^{18}$ m$^{-2}$. Comment: 6 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|