Time-resolved spectroscopy of spin-current emission from a magnetic insulator

Yuma Tateno, Masaya Fukami, Takaharu Tashiro, Kazuya Ando

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number174423
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume93
Issue number17
DOIs
Publication statusPublished - 2016 May 23

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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