Abstract
Modulation of ferromagnetic resonance (FMR) linewidth owing to a spin transfer torque (STT) caused by the absorption of a pure spin current in a permalloy nanowire is demonstrated. To exclude the STT induced by the spin-polarized current, the pure spin current was produced using a lateral spin-valve structure. Self-homodyne FMR detection without applying an external sense current was used for minimizing the influence of Joule heating on the FMR linewidth. The linear variation of the FMR linewidth caused by the STT was clearly observed when the electrical current generating the pure spin current was below 1 mA.
| Original language | English |
|---|---|
| Article number | 043001 |
| Journal | Applied Physics Express |
| Volume | 8 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2015 Apr 1 |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Spin transfer torque in lateral spin-valve structure evaluated from field-excited ferromagnetic resonant linewidth. / Nozaki, Yukio; Watanabe, Sho D.; Kobayashi, Takafumi; Tanazawa, Tomoki.
In: Applied Physics Express, Vol. 8, No. 4, 043001, 01.04.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spin transfer torque in lateral spin-valve structure evaluated from field-excited ferromagnetic resonant linewidth
AU - Nozaki, Yukio
AU - Watanabe, Sho D.
AU - Kobayashi, Takafumi
AU - Tanazawa, Tomoki
PY - 2015/4/1
Y1 - 2015/4/1
N2 - Modulation of ferromagnetic resonance (FMR) linewidth owing to a spin transfer torque (STT) caused by the absorption of a pure spin current in a permalloy nanowire is demonstrated. To exclude the STT induced by the spin-polarized current, the pure spin current was produced using a lateral spin-valve structure. Self-homodyne FMR detection without applying an external sense current was used for minimizing the influence of Joule heating on the FMR linewidth. The linear variation of the FMR linewidth caused by the STT was clearly observed when the electrical current generating the pure spin current was below 1 mA.
AB - Modulation of ferromagnetic resonance (FMR) linewidth owing to a spin transfer torque (STT) caused by the absorption of a pure spin current in a permalloy nanowire is demonstrated. To exclude the STT induced by the spin-polarized current, the pure spin current was produced using a lateral spin-valve structure. Self-homodyne FMR detection without applying an external sense current was used for minimizing the influence of Joule heating on the FMR linewidth. The linear variation of the FMR linewidth caused by the STT was clearly observed when the electrical current generating the pure spin current was below 1 mA.
UR - http://www.scopus.com/inward/record.url?scp=84927940108&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84927940108&partnerID=8YFLogxK
U2 - 10.7567/APEX.8.043001
DO - 10.7567/APEX.8.043001
M3 - Article
AN - SCOPUS:84927940108
VL - 8
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 4
M1 - 043001
ER -