Photoinduced switching between charge and orbital ordered insulator and ferromagnetic metal in perovskite manganites

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

doi:10.1103/PhysRevB.77.094410

Photoinduced switching between charge and orbital ordered insulator and ferromagnetic metal in perovskite manganites

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

SCI - Physics

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

35 Citations (Scopus)

Abstract

Photoinduced switching in perovskite manganites by irradiation of a femtosecond laser pulse was investigated on Pr0.55 (Ca1-y Sry) 0.45 Mn O3 locating in the critical region between the charge and orbital ordered insulator (CO/OOI) phase and the ferromagnetic metal (FM) phase. For a low excitation density, the charge and orbital order is partially melted and the microscopic quasi-FM domains are generated, which rapidly return to the CO/OOI state. When the excitation density exceeds a threshold, the CO/OOI phase transforms permanently to the FM one. The stabilization of the photoinduced FM state is attributable to the large relaxation of the lattice deformations through the percolation of the microscopic quasi-FM domains.

Original language	English
Article number	094410
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.77.094410
Publication status	Published - 2008 Mar 13

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Photoinduced switching between charge and orbital ordered insulator and ferromagnetic metal in perovskite manganites. / Matsubara, M.; Okimoto, Y.; Ogasawara, T.; Iwai, S.; Tomioka, Y.; Okamoto, H.; Tokura, Y.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 77, No. 9, 094410, 13.03.2008.

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

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