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Appl. Phys. Lett. 98, 012105 (2011); http://dx.doi.org/10.1063/1.3536486 (3 pages)

Metal-insulator transition and electrically driven memristive characteristics of SmNiO3 thin films

Sieu D. Ha, Gulgun H. Aydogdu, and Shriram Ramanathan

School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachussets 02138, USA

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(Received 10 November 2010; accepted 19 December 2010; published online 4 January 2011)

The correlated oxide SmNiO3 (SNO) exhibits an insulator to metal transition (MIT) at 130 °C in bulk form. We report on synthesis and electron transport in SNO films deposited on LaAlO3 (LAO) and Si single crystals. X-ray diffraction studies show that compressively strained single-phase SNO grows epitaxially on LAO while on Si, mixed oxide phases are observed. MIT is observed in resistance-temperature measurements in films grown on both substrates, with charge transport in-plane for LAO/SNO films and out-of-plane for Si/SNO films. Electrically driven memristive behavior is realized in LAO/SNO films, suggesting that SNO may be relevant for neuromorphic devices.

© 2011 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 73.61.Ng

    Insulators

  • 68.60.Bs

    Mechanical and acoustical properties

  • 81.40.Lm

    Deformation, plasticity, and creep

  • 68.55.at

    Other materials

  • 81.15.Cd

    Deposition by sputtering

  • 71.30.+h

    Metal-insulator transitions and other electronic transitions

  • 72.60.+g

    Mixed conductivity and conductivity transitions

ARTICLE DATA

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

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