TY - JOUR
T1 - Time-resolved spectroscopy of spin-current emission from a magnetic insulator
AU - Tateno, Yuma
AU - Fukami, Masaya
AU - Tashiro, Takaharu
AU - Ando, Kazuya
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Nos. 26220604, 26103004, and 26600078, the Mitsubishi Foundation, the Asahi Glass Foundation, the Mizuho Foundation for the Promotion of Sciences, and the Casio Science Promotion Foundation
Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/5/23
Y1 - 2016/5/23
N2 - We demonstrate time-resolved spectroscopy of spin-current emission from a magnetic insulator using the inverse spin Hall effect (ISHE). We measured magnetic field dependence of the spin-current emission in the time domain and found that the spectral shape of the ISHE voltage changes with time. The change in the spectral shape is due to field and power dependent temporal oscillation of the spin pumping driven by parametric magnons. The observed oscillating spin-current emission driven by dipole-exchange magnons is well reproduced by a model calculation based on the S theory. In contrast, the spin-current emission driven by short-wavelength exchange magnons cannot be reproduced with this model, illustrating an important role of higher-order nonlinear effects in the spin-current emission.
AB - We demonstrate time-resolved spectroscopy of spin-current emission from a magnetic insulator using the inverse spin Hall effect (ISHE). We measured magnetic field dependence of the spin-current emission in the time domain and found that the spectral shape of the ISHE voltage changes with time. The change in the spectral shape is due to field and power dependent temporal oscillation of the spin pumping driven by parametric magnons. The observed oscillating spin-current emission driven by dipole-exchange magnons is well reproduced by a model calculation based on the S theory. In contrast, the spin-current emission driven by short-wavelength exchange magnons cannot be reproduced with this model, illustrating an important role of higher-order nonlinear effects in the spin-current emission.
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U2 - 10.1103/PhysRevB.93.174423
DO - 10.1103/PhysRevB.93.174423
M3 - Article
AN - SCOPUS:84970993186
SN - 2469-9950
VL - 93
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 17
M1 - 174423
ER -