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Large photoinduced conductivity reduction in thin films of metallic ferromagnetic manganites
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10.1063/1.3665039
/content/aip/journal/apl/99/22/10.1063/1.3665039
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/22/10.1063/1.3665039
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Temperature dependence of the resistance of the La0.7Ba0.3MnO3 thin film on NGO: thick solid gray line—cooling without illumination; thick solid black line—warming with illumination after cooling without illumination; thin dashed line—cooling with illumination; thin solid line—warming with illumination after cooling with illumination. Cooling and warming is shown by arrows for each curve. Upper inset shows temperature dependence of the resistance of the Bi0.75Sr0.25MnO3 thin film: gray line—cooling without illumination; black line—warming with illumination. Lower inset shows different runs of resistance taken on cooling with illumination.

Image of FIG. 2.
FIG. 2.

(a) Time dependence of the resistance of the La0.7Ba0.3MnO3 thin film when the sample illumination was switched on and off at T = 230 K: thin black line—initial illumination at this temperature; thick gray and black lines—subsequent runs at this temperature. The inset schematically shows experimental current and voltage contact configuration and illuminated region. (b) Temperature dependence of the time constants of the process of transition to original state after illumination. The data were taken on warming. The inset shows a fit (gray line) of the time dependence of the resistance after the laser illumination was switched off to the exponential decay ΔR ∝ exp(−t/τ) at T = 230 K.

Image of FIG. 3.
FIG. 3.

Dependence of the relative photoinduced change of the resistance of the La0.7Ba0.3MnO3 thin film on the power of illumination at T = 110 K (squares) and T = 230 K (triangles). The inset shows a time dependence of resistance after illumination was switched on for 633 nm (gray line), 514 nm (dashed line), and 488 nm (black line) wavelengths of 24 mW laser output power at T = 150 K.

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/content/aip/journal/apl/99/22/10.1063/1.3665039
2011-11-29
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Large photoinduced conductivity reduction in thin films of metallic ferromagnetic manganites
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/22/10.1063/1.3665039
10.1063/1.3665039
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