MISC

筆頭著者 本文へのリンクあり
2022年2月23日

Spin canting in nonlinear terahertz magnon dynamics revealed by magnetorefractive probing in orthoferrite

  • Kurihara, Takayuki
  • ,
  • Bamba, Motoaki
  • ,
  • Watanabe, Hiroshi
  • ,
  • Nakajima, Makoto
  • ,
  • Suemoto, Tohru

記述言語
英語
掲載種別
機関テクニカルレポート,技術報告書,プレプリント等
DOI
10.48550/ARXIV.2202.11365
出版者・発行元
arXiv

We excite the spin precession in rare-earth orthoferrite YFeO3 by the magnetic field of intense terahertz pulse and probe its dynamics by transient absorption change in the near infrared. The observed waveforms contain quasi-ferromagnetic-mode magnon oscillation and its second harmonics with a comparably strong amplitude. The result can be explained by dielectric function derived from magnetorefractive Hamiltonian. We reveal that the strong second harmonic signal microscopically originates from novel dynamics of the quasi-ferromagnetic mode magnon at nonlinear regime, wherein spin canting angle periodically oscillates.

リンク情報
DOI
https://doi.org/10.48550/ARXIV.2202.11365 本文へのリンクあり
arXiv
http://arxiv.org/abs/arXiv:2202.11365
ID情報
  • DOI : 10.48550/ARXIV.2202.11365
  • ORCIDのPut Code : 108756051
  • arXiv ID : arXiv:2202.11365

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