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Colossal resistance switching and band gap modulation in a perovskite nickelate by electron doping

Author

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  • Jian Shi

    (School of Engineering and Applied Sciences, Harvard University)

  • You Zhou

    (School of Engineering and Applied Sciences, Harvard University)

  • Shriram Ramanathan

    (School of Engineering and Applied Sciences, Harvard University)

Abstract

The electronic properties of correlated oxides are exceptionally sensitive to the orbital occupancy of electrons. Here we report an electron doping strategy via a chemical route, where interstitial dopants (for example, hydrogen) can be reversibly intercalated, realizing a sharp phase transition in a model correlated perovskite nickelate SmNiO3. The electron configuration of eg orbital of in SmNiO3 is modified by injecting and anchoring an extra electron, forming a strongly correlated structure leading to the emergence of a new insulating phase. A reversible resistivity modulation greater than eight orders of magnitude is demonstrated at room temperature. A solid-state room temperature non-volatile proton-gated phase-change transistor is demonstrated based on this principle, which may inform new materials design for correlated oxide devices. Electron doping-driven phase transition accompanied by large conductance changes and band gap modulation opens up new directions to explore emerging electronic and photonic devices with correlated oxide systems.

Suggested Citation

  • Jian Shi & You Zhou & Shriram Ramanathan, 2014. "Colossal resistance switching and band gap modulation in a perovskite nickelate by electron doping," Nature Communications, Nature, vol. 5(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5860
    DOI: 10.1038/ncomms5860
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    Cited by:

    1. Haiming Deng & Lukas Zhao & Kyungwha Park & Jiaqiang Yan & Kamil Sobczak & Ayesha Lakra & Entela Buzi & Lia Krusin-Elbaum, 2022. "Topological surface currents accessed through reversible hydrogenation of the three-dimensional bulk," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Neda Alsadat Aghamiri & Guangwei Hu & Alireza Fali & Zhen Zhang & Jiahan Li & Sivacarendran Balendhran & Sumeet Walia & Sharath Sriram & James H. Edgar & Shriram Ramanathan & Andrea Alù & Yohannes Aba, 2022. "Reconfigurable hyperbolic polaritonics with correlated oxide metasurfaces," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    3. L. Guasco & Yu. N. Khaydukov & S. Pütter & L. Silvi & M. A. Paulin & T. Keller & B. Keimer, 2022. "Resonant neutron reflectometry for hydrogen detection," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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