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Photoinduced transient states of antiferromagnetic orderings in La1/3Sr2/3FeO3 and SrFeO3−δ thin films observed through time-resolved resonant soft x-ray scattering

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 an...

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Published in:New journal of physics 2022-04, Vol.24 (4), p.043012
Main Authors: Yamamoto, Kohei, Tsuyama, Tomoyuki, Ito, Suguru, Takubo, Kou, Matsuda, Iwao, Pontius, Niko, Schüßler-Langeheine, Christian, Minohara, Makoto, Kumigashira, Hiroshi, Yamasaki, Yuichi, Nakao, Hironori, Murakami, Youichi, Katase, Takayoshi, Kamiya, Toshio, Wadati, Hiroki
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container_title New journal of physics
container_volume 24
creator Yamamoto, Kohei
Tsuyama, Tomoyuki
Ito, Suguru
Takubo, Kou
Matsuda, Iwao
Pontius, Niko
Schüßler-Langeheine, Christian
Minohara, Makoto
Kumigashira, Hiroshi
Yamasaki, Yuichi
Nakao, Hironori
Murakami, Youichi
Katase, Takayoshi
Kamiya, Toshio
Wadati, Hiroki
description 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.
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subjects antiferromagnetic ordering
Antiferromagnetism
Charge transfer
Coupling
Disproportionation
Ferromagnetic materials
Magnetism
Perovskites
Physics
Soft x rays
Spin dynamics
synchrotron radiation
Thin films
time-resolved resonant soft x-ray scattering
X-ray scattering
title Photoinduced transient states of antiferromagnetic orderings in La1/3Sr2/3FeO3 and SrFeO3−δ thin films observed through time-resolved resonant soft x-ray scattering
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