Transport properties of LaTiO3+x films and heterostructures

We report on the transport properties of LaTiO3+ε and LaTiO3.5 films. The LaTiO3+ε samples show metallic transport and several samples exhibit a hysteretic drop of resistance during cooldown at ∼240 K. The ferroelectric LaTiO3.5 samples, grown in capacitor structures, have nonlinear, diode-like and...

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Bibliographic Details
Published in:Applied physics letters 2003-05, Vol.82 (18), p.3077-3079
Main Authors: Schmehl, A., Lichtenberg, F., Bielefeldt, H., Mannhart, J., Schlom, D. G.
Format: Article
Language:English
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Summary:We report on the transport properties of LaTiO3+ε and LaTiO3.5 films. The LaTiO3+ε samples show metallic transport and several samples exhibit a hysteretic drop of resistance during cooldown at ∼240 K. The ferroelectric LaTiO3.5 samples, grown in capacitor structures, have nonlinear, diode-like and hysteretic V(I) characteristics. Two charge-controlled transport regimes are found, which can be utilized for switching the devices between two voltage states.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1572960