Photonic phase control of magnetic oxides

Y. Okimoto; Y. Tokura; Y. Tomioka; Y. Onose; Y. Otsuka; K. Miyano

doi:10.1080/10587259808044339

Photonic phase control of magnetic oxides

Y. Okimoto, Y. Tokura, Y. Tomioka, Y. Onose, Y. Otsuka, K. Miyano

Research output: Contribution to journal › Conference article › peer-review

11 Citations (Scopus)

Abstract

Unconventional optical responses have been revealed for the perovskite manganese oxide, Pr_1-xCa_xMnO₃, which is known to undergo the insulator-metal (I-M) transition relevant to the magnetic field induced melting of the charge-ordered (CO) state. Optical conductivity spectrum is drastically modified over 0-1 eV from a gap-like feature into a metallic band with application of magnetic field of 7 T. It was found that such an I-M transition can be caused by photo-excitation as well. The electrical conductivity and magnetization increase abruptly with irradiation of visible/IR laser, indicating the photo-melting of the CO state and the photo-generation of ferromagnetic metallic domains.

Original language	English
Pages (from-to)	559/257-570/268
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	314
DOIs	https://doi.org/10.1080/10587259808044339
Publication status	Published - 1998
Externally published	Yes
Event	Proceedings of the 1997 8th Sympoisum on Unconventional Photoactive Systems (UPS) - Nara, Jpn Duration: 1997 May 25 → 1997 May 29

ASJC Scopus subject areas

Condensed Matter Physics

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10.1080/10587259808044339

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title = "Photonic phase control of magnetic oxides",

abstract = "Unconventional optical responses have been revealed for the perovskite manganese oxide, Pr1-xCaxMnO3, which is known to undergo the insulator-metal (I-M) transition relevant to the magnetic field induced melting of the charge-ordered (CO) state. Optical conductivity spectrum is drastically modified over 0-1 eV from a gap-like feature into a metallic band with application of magnetic field of 7 T. It was found that such an I-M transition can be caused by photo-excitation as well. The electrical conductivity and magnetization increase abruptly with irradiation of visible/IR laser, indicating the photo-melting of the CO state and the photo-generation of ferromagnetic metallic domains.",

author = "Y. Okimoto and Y. Tokura and Y. Tomioka and Y. Onose and Y. Otsuka and K. Miyano",

year = "1998",

doi = "10.1080/10587259808044339",

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volume = "314",

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note = "Proceedings of the 1997 8th Sympoisum on Unconventional Photoactive Systems (UPS) ; Conference date: 25-05-1997 Through 29-05-1997",

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T1 - Photonic phase control of magnetic oxides

AU - Okimoto, Y.

AU - Tokura, Y.

AU - Tomioka, Y.

AU - Onose, Y.

AU - Otsuka, Y.

AU - Miyano, K.

PY - 1998

Y1 - 1998

N2 - Unconventional optical responses have been revealed for the perovskite manganese oxide, Pr1-xCaxMnO3, which is known to undergo the insulator-metal (I-M) transition relevant to the magnetic field induced melting of the charge-ordered (CO) state. Optical conductivity spectrum is drastically modified over 0-1 eV from a gap-like feature into a metallic band with application of magnetic field of 7 T. It was found that such an I-M transition can be caused by photo-excitation as well. The electrical conductivity and magnetization increase abruptly with irradiation of visible/IR laser, indicating the photo-melting of the CO state and the photo-generation of ferromagnetic metallic domains.

AB - Unconventional optical responses have been revealed for the perovskite manganese oxide, Pr1-xCaxMnO3, which is known to undergo the insulator-metal (I-M) transition relevant to the magnetic field induced melting of the charge-ordered (CO) state. Optical conductivity spectrum is drastically modified over 0-1 eV from a gap-like feature into a metallic band with application of magnetic field of 7 T. It was found that such an I-M transition can be caused by photo-excitation as well. The electrical conductivity and magnetization increase abruptly with irradiation of visible/IR laser, indicating the photo-melting of the CO state and the photo-generation of ferromagnetic metallic domains.

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