Photoinduced transient states of antiferromagnetic orderings in La1/3Sr2/3FeO3and SrFeO3- δ thin films observed through time-resolved resonant soft x-ray scattering

Kohei Yamamoto, Tomoyuki Tsuyama, Suguru Ito, Kou Takubo, Iwao Matsuda, Niko Pontius, Christian Schüßler-Langeheine, Makoto Minohara, Hiroshi Kumigashira, Yuichi Yamasaki, Hironori Nakao, Youichi Murakami, Takayoshi Katase, Toshio Kamiya, Hiroki Wadati

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The relationship between the magnetic interaction and photoinduced dynamics in antiferromagnetic perovskites is investigated in this study. In La1/3Sr2/3FeO3 thin films, commensurate spin ordering is accompanied by charge disproportionation, whereas SrFeO3-δ thin films show incommensurate helical antiferromagnetic spin ordering due to increased ferromagnetic coupling compared to La1/3Sr2/3FeO3. To understand the photoinduced spin dynamics in these materials, we investigate the spin ordering through time-resolved resonant soft x-ray scattering. In La1/3Sr2/3FeO3, ultrafast quenching of the magnetic ordering within 130 fs through a nonthermal process is observed, triggered by charge transfer between the Fe atoms. We compare this to the photoinduced dynamics of the helical magnetic ordering of SrFeO3-δ . We find that the change in the magnetic coupling through optically induced charge transfer can offer an even more efficient channel for spin-order manipulation.

Original languageEnglish
Article number043012
JournalNew Journal of Physics
Volume24
Issue number4
DOIs
Publication statusPublished - 2022 Apr 1

Keywords

  • antiferromagnetic ordering
  • synchrotron radiation
  • time-resolved resonant soft x-ray scattering

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