Dynamical spin injection induced by FMR heating effect in CoFeAl strip

K. Yamanoi, Y. Yokotani, S. Yakata, Takashi Kimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish
Title of host publication2015 IEEE International Magnetics Conference, INTERMAG 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479973224
DOIs
Publication statusPublished - Jan 1 2015
Event2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
Duration: May 11 2015May 15 2015

Other

Other2015 IEEE International Magnetics Conference, INTERMAG 2015
CountryChina
CityBeijing
Period5/11/155/15/15

Fingerprint

Ferromagnetic resonance
Seebeck effect
Heating
Thermal gradients
Magnetization
Electricity
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Yamanoi, K., Yokotani, Y., Yakata, S., & Kimura, T. (2015). Dynamical spin injection induced by FMR heating effect in CoFeAl strip. In 2015 IEEE International Magnetics Conference, INTERMAG 2015 [7156977] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2015.7156977

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 proceedingConference contribution

Yamanoi, K, Yokotani, Y, Yakata, S & Kimura, T 2015, Dynamical spin injection induced by FMR heating effect in CoFeAl strip. in 2015 IEEE International Magnetics Conference, INTERMAG 2015., 7156977, Institute of Electrical and Electronics Engineers Inc., 2015 IEEE International Magnetics Conference, INTERMAG 2015, Beijing, China, 5/11/15. https://doi.org/10.1109/INTMAG.2015.7156977
Yamanoi K, Yokotani Y, Yakata S, Kimura T. Dynamical spin injection induced by FMR heating effect in CoFeAl strip. In 2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7156977 https://doi.org/10.1109/INTMAG.2015.7156977
Yamanoi, K. ; Yokotani, Y. ; Yakata, S. ; Kimura, Takashi. / Dynamical spin injection induced by FMR heating effect in CoFeAl strip. 2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc., 2015.
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