Abstract
Dynamical spin injection is attractive mean for generating and controlling the spin current without the use of the electricity. So far, the mechanism of the dynamical spin injection is attributed to the spin pumping induced by the ferromagnetic resonance (FMR). Although its quantitative evaluation is not simple because of the coexistence of the dc and ac spin pumping currents, the experimental results related to the spin pumping are mainly analyzed only by focusing on the dc spin current. Since the magnitude of the ac spin current is much larger than that of the dc spin current, the consideration of the ac spin current may be important. Apart from the spin pumping, another driving mechanism for the dynamical spin injection, we are interested in the heating effect during the resonant precession. When the temperature gradient exists across the ferromagnet/ nonmagnet interface, the spin current is generated through the thermal spin injection (spin-dependent Seebeck effect)[1,2]. In this presentation, we develop the evaluation method of the FMR heating effect for the micro- or nano-sized ferromagnet and investigate the influence of the dynamical spin injection on the magnetization dynamics.
| Original language | English |
|---|---|
| Title of host publication | 2015 IEEE International Magnetics Conference, INTERMAG 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781479973224 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
| Event | 2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China Duration: May 11 2015 → May 15 2015 |
Other
| Other | 2015 IEEE International Magnetics Conference, INTERMAG 2015 |
|---|---|
| Country | China |
| City | Beijing |
| Period | 5/11/15 → 5/15/15 |
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All Science Journal Classification (ASJC) codes
- Surfaces, Coatings and Films
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
Dynamical spin injection induced by FMR heating effect in CoFeAl strip. / Yamanoi, K.; Yokotani, Y.; Yakata, S.; Kimura, Takashi.
2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7156977.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Dynamical spin injection induced by FMR heating effect in CoFeAl strip
AU - Yamanoi, K.
AU - Yokotani, Y.
AU - Yakata, S.
AU - Kimura, Takashi
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Dynamical spin injection is attractive mean for generating and controlling the spin current without the use of the electricity. So far, the mechanism of the dynamical spin injection is attributed to the spin pumping induced by the ferromagnetic resonance (FMR). Although its quantitative evaluation is not simple because of the coexistence of the dc and ac spin pumping currents, the experimental results related to the spin pumping are mainly analyzed only by focusing on the dc spin current. Since the magnitude of the ac spin current is much larger than that of the dc spin current, the consideration of the ac spin current may be important. Apart from the spin pumping, another driving mechanism for the dynamical spin injection, we are interested in the heating effect during the resonant precession. When the temperature gradient exists across the ferromagnet/ nonmagnet interface, the spin current is generated through the thermal spin injection (spin-dependent Seebeck effect)[1,2]. In this presentation, we develop the evaluation method of the FMR heating effect for the micro- or nano-sized ferromagnet and investigate the influence of the dynamical spin injection on the magnetization dynamics.
AB - Dynamical spin injection is attractive mean for generating and controlling the spin current without the use of the electricity. So far, the mechanism of the dynamical spin injection is attributed to the spin pumping induced by the ferromagnetic resonance (FMR). Although its quantitative evaluation is not simple because of the coexistence of the dc and ac spin pumping currents, the experimental results related to the spin pumping are mainly analyzed only by focusing on the dc spin current. Since the magnitude of the ac spin current is much larger than that of the dc spin current, the consideration of the ac spin current may be important. Apart from the spin pumping, another driving mechanism for the dynamical spin injection, we are interested in the heating effect during the resonant precession. When the temperature gradient exists across the ferromagnet/ nonmagnet interface, the spin current is generated through the thermal spin injection (spin-dependent Seebeck effect)[1,2]. In this presentation, we develop the evaluation method of the FMR heating effect for the micro- or nano-sized ferromagnet and investigate the influence of the dynamical spin injection on the magnetization dynamics.
UR - http://www.scopus.com/inward/record.url?scp=84942475277&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84942475277&partnerID=8YFLogxK
U2 - 10.1109/INTMAG.2015.7156977
DO - 10.1109/INTMAG.2015.7156977
M3 - Conference contribution
AN - SCOPUS:84942475277
BT - 2015 IEEE International Magnetics Conference, INTERMAG 2015
PB - Institute of Electrical and Electronics Engineers Inc.
ER -