TY - JOUR
T1 - Laser-induced terahertz emission in Co2MnSi/Pt structure
AU - Sasaki, Yuta
AU - Takahashi, Yukiko
AU - Kasai, Shinya
N1 - Publisher Copyright:
© 2020 The Japan Society of Applied Physics.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - In this study, the terahertz (THz) emission in a Co2MnSi/Pt structure was investigated. The THz emission intensity increased after annealing, and the optimized temperature was above 400 °C owing to the increase in B2 ordering. The THz emission intensity of Co2MnSi/Pt was 1.4-2.0 times larger than that of CoFe/Pt. The THz conductivity for Co2MnSi/Pt was smaller than that for CoFe/Pt. The ultrafast spin-current intensity was almost the same in both materials. A small conductivity and comparable ultrafast spin-current injection into the Pt layer are possible reasons for the efficient THz emission in Co2MnSi/Pt.
AB - In this study, the terahertz (THz) emission in a Co2MnSi/Pt structure was investigated. The THz emission intensity increased after annealing, and the optimized temperature was above 400 °C owing to the increase in B2 ordering. The THz emission intensity of Co2MnSi/Pt was 1.4-2.0 times larger than that of CoFe/Pt. The THz conductivity for Co2MnSi/Pt was smaller than that for CoFe/Pt. The ultrafast spin-current intensity was almost the same in both materials. A small conductivity and comparable ultrafast spin-current injection into the Pt layer are possible reasons for the efficient THz emission in Co2MnSi/Pt.
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U2 - 10.35848/1882-0786/abb1c9
DO - 10.35848/1882-0786/abb1c9
M3 - Article
AN - SCOPUS:85091328120
SN - 1882-0778
VL - 13
JO - Applied Physics Express
JF - Applied Physics Express
IS - 9
M1 - 093003
ER -