TY - JOUR
T1 - Enhancement of spin-charge current interconversion by oxidation of rhenium
AU - Karube, Shutaro
AU - Sugawara, Daichi
AU - Tang, Chao
AU - Tanabe, Tadao
AU - Oyama, Yutaka
AU - Nitta, Junsaku
N1 - Funding Information:
We thank Prof. A. Tsukamoto, Prof. M. Kohda, Dr. N. Akao and Dr. Y. Ohira for their helpful information and constructive discussions. This work is partially supported by Japan Society for the Promotion of Science (JSPS) (Grants Nos. 15H05699, No. 17H06512, and No. 18K14111), Center for Spintronics Research Network in Tohoku University and Center for Science and Innovation in Spintronics in Tohoku University.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/12/15
Y1 - 2020/12/15
N2 - We have demonstrated enhancement of the spin-charge current interconversion by oxidation of rhenium (Re). Although amorphous rhenium oxide (ReOX) is electrically conductive, the spin–orbit torque efficiency measured by spin-torque ferromagnetic resonance is 0.074, and 37 times larger than the pure Re case whose amplitude is 0.002. Furthermore, we have also found that the values of the damping-like and field-like torque efficiencies are 0.030 and −0.052, respectively. These values are comparable with those for conventional spin–orbit materials such as Pt or Ta, suggesting that ReOX is a candidate material for spintronics devices. THz-time domain spectroscopy was performed to confirm the inverse spin-charge current conversion process in ReOX.
AB - We have demonstrated enhancement of the spin-charge current interconversion by oxidation of rhenium (Re). Although amorphous rhenium oxide (ReOX) is electrically conductive, the spin–orbit torque efficiency measured by spin-torque ferromagnetic resonance is 0.074, and 37 times larger than the pure Re case whose amplitude is 0.002. Furthermore, we have also found that the values of the damping-like and field-like torque efficiencies are 0.030 and −0.052, respectively. These values are comparable with those for conventional spin–orbit materials such as Pt or Ta, suggesting that ReOX is a candidate material for spintronics devices. THz-time domain spectroscopy was performed to confirm the inverse spin-charge current conversion process in ReOX.
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U2 - 10.1016/j.jmmm.2020.167298
DO - 10.1016/j.jmmm.2020.167298
M3 - Article
AN - SCOPUS:85090938378
SN - 0304-8853
VL - 516
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 167298
ER -