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Imaging metal-like monoclinic phase stabilized by surface coordination effect in vanadium dioxide nanobeam

Author

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  • Zejun Li

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Jiajing Wu

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Zhenpeng Hu

    (School of Physics, Nankai University)

  • Yue Lin

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Qi Chen

    (i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences)

  • Yuqiao Guo

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Yuhua Liu

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Yingcheng Zhao

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Jing Peng

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Wangsheng Chu

    (National Synchrotron Radiation Laboratory, University of Science and Technology of China)

  • Changzheng Wu

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

  • Yi Xie

    (Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China)

Abstract

In correlated systems, intermediate states usually appear transiently across phase transitions even at the femtosecond scale. It therefore remains an open question how to determine these intermediate states—a critical issue for understanding the origin of their correlated behaviour. Here we report a surface coordination route to successfully stabilize and directly image an intermediate state in the metal-insulator transition of vanadium dioxide. As a prototype metal-insulator transition material, we capture an unusual metal-like monoclinic phase at room temperature that has long been predicted. Coordinate bonding of L-ascorbic acid molecules with vanadium dioxide nanobeams induces charge-carrier density reorganization and stabilizes metallic monoclinic vanadium dioxide, unravelling orbital-selective Mott correlation for gap opening of the vanadium dioxide metal–insulator transition. Our study contributes to completing phase-evolution pathways in the metal-insulator transition process, and we anticipate that coordination chemistry may be a powerful tool for engineering properties of low-dimensional correlated solids.

Suggested Citation

  • Zejun Li & Jiajing Wu & Zhenpeng Hu & Yue Lin & Qi Chen & Yuqiao Guo & Yuhua Liu & Yingcheng Zhao & Jing Peng & Wangsheng Chu & Changzheng Wu & Yi Xie, 2017. "Imaging metal-like monoclinic phase stabilized by surface coordination effect in vanadium dioxide nanobeam," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15561
    DOI: 10.1038/ncomms15561
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