Field Induced Spin Transport Properties in Pr2/3Sr1/3MnO3 Film

doi:10.3724/SP.J.1077.2008.00281

Abstract

Abstract: The doped manganites Pr_2/3Sr_1/3MnO₃ (PSMO)film was prepared by the pulsed laser deposition method. The spin transport properties of the film induced by the magnetic field, laser and the current field were investigated. In ferromagnetic metallic state, the laser irradiation results in the increase of the resistance, which is attributed to the photoinduced demagnetization effect. But the magnetic field and the current induce the resistance decrease because the magnetic field and the current align the magnetic moments of the nearest Mn ions and enhance the double-exchange effect. In the paramagnetic
insulating phase, the three external fields induce the decrease in the resistance, which is due to the field-induced delocalization of the small polarons.

Key words: manganites film, field induced effect, spin transport, small polarons

CLC Number:

TM271
O51

ZHAO Sheng-Gui,CHEN Chang-Le,JIN Ke-Xin. Field Induced Spin Transport Properties in Pr_2/3Sr_1/3MnO₃ Film[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00281.

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Field Induced Spin Transport Properties in Pr_2/3Sr_1/3MnO₃ Film

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