Ultrafast photoinduced ferromagnetism in the perovskite manganite Gd0.55 Sr0.45 Mn O3

M. Matsubara; Y. Okimoto; T. Ogasawara; Y. Tomioka; H. Okamoto; Y. Tokura

doi:10.1063/1.2836341

Ultrafast photoinduced ferromagnetism in the perovskite manganite Gd0.55 Sr0.45 Mn O3

M. Matsubara, Y. Okimoto, T. Ogasawara, Y. Tomioka, H. Okamoto, Y. Tokura

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We report the ultrafast switching of the magnetic state in the course of photoinduced phase transition from an insulator with short-range charge and orbital order (CO/OO) to a ferromagnetic metal in perovskite-type Gd0.55 Sr0.45 Mn O3. The femtosecond Kerr rotation and reflectivity measurements, which detect the spin and charge dynamics, respectively, have revealed that the metallic state is formed within the time resolution (∼200 fs); however, magnetization increases with the time constant of 0.5 ps. The relatively slow increase of the magnetization is attributable to the magnetic-field-induced alignment of ferromagnetic domains in the initially produced metallic state.

Original language	English
Article number	07B110
Journal	Journal of Applied Physics
Volume	103
Issue number	7
DOIs	https://doi.org/10.1063/1.2836341
Publication status	Published - 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "We report the ultrafast switching of the magnetic state in the course of photoinduced phase transition from an insulator with short-range charge and orbital order (CO/OO) to a ferromagnetic metal in perovskite-type Gd0.55 Sr0.45 Mn O3. The femtosecond Kerr rotation and reflectivity measurements, which detect the spin and charge dynamics, respectively, have revealed that the metallic state is formed within the time resolution (∼200 fs); however, magnetization increases with the time constant of 0.5 ps. The relatively slow increase of the magnetization is attributable to the magnetic-field-induced alignment of ferromagnetic domains in the initially produced metallic state.",

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AU - Matsubara, M.

AU - Okimoto, Y.

AU - Ogasawara, T.

AU - Tomioka, Y.

AU - Okamoto, H.

AU - Tokura, Y.

PY - 2008

Y1 - 2008

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AB - We report the ultrafast switching of the magnetic state in the course of photoinduced phase transition from an insulator with short-range charge and orbital order (CO/OO) to a ferromagnetic metal in perovskite-type Gd0.55 Sr0.45 Mn O3. The femtosecond Kerr rotation and reflectivity measurements, which detect the spin and charge dynamics, respectively, have revealed that the metallic state is formed within the time resolution (∼200 fs); however, magnetization increases with the time constant of 0.5 ps. The relatively slow increase of the magnetization is attributable to the magnetic-field-induced alignment of ferromagnetic domains in the initially produced metallic state.

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Ultrafast photoinduced ferromagnetism in the perovskite manganite Gd0.55 Sr0.45 Mn O3

Abstract

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