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Atomic mechanism of polarization-controlled surface reconstruction in ferroelectric thin films

Author

Listed:
  • Peng Gao

    (Electron Microscopy Laboratory, School of Physics, Center for Nanochemistry, Peking University
    Collaborative Innovation Center of Quantum Matter)

  • Heng-Jui Liu

    (National Chiao Tung University)

  • Yen-Lin Huang

    (National Chiao Tung University)

  • Ying-Hao Chu

    (National Chiao Tung University
    Institute of Physics, Academia Sinica)

  • Ryo Ishikawa

    (Institute of Engineering Innovation, The University of Tokyo)

  • Bin Feng

    (Institute of Engineering Innovation, The University of Tokyo)

  • Ying Jiang

    (Collaborative Innovation Center of Quantum Matter
    International Center for Quantum Materials, School of Physics, Peking University)

  • Naoya Shibata

    (Institute of Engineering Innovation, The University of Tokyo)

  • En-Ge Wang

    (Collaborative Innovation Center of Quantum Matter
    International Center for Quantum Materials, School of Physics, Peking University)

  • Yuichi Ikuhara

    (Institute of Engineering Innovation, The University of Tokyo
    Nanostructures Research Laboratory, Japan Fine Ceramic Center
    WPI Advanced Institute for Materials Research, Tohoku University)

Abstract

At the ferroelectric surface, the broken translational symmetry induced bound charge should significantly alter the local atomic configurations. Experimentally revealing the atomic structure of ferroelectric surface, however, is very challenging due to the strong spatial variety between nano-sized domains, and strong interactions between the polarization and other structural parameters. Here, we study surface structures of Pb(Zr0.2Ti0.8)O3 thin film by using the annular bright-field imaging. We find that six atomic layers with suppressed polarization and a charged 180° domain wall are at negatively poled surfaces, no reconstruction exists at positively poled surfaces, and seven atomic layers with suppressed polarization and a charged 90° domain wall exist at nominally neutral surfaces in ferroelastic domains. Our results provide critical insights into engineering ferroelectric thin films, fine grain ceramics and surface chemistry devices. The state-of-the-art methodology demonstrated here can greatly advance our understanding of surface science for oxides.

Suggested Citation

  • Peng Gao & Heng-Jui Liu & Yen-Lin Huang & Ying-Hao Chu & Ryo Ishikawa & Bin Feng & Ying Jiang & Naoya Shibata & En-Ge Wang & Yuichi Ikuhara, 2016. "Atomic mechanism of polarization-controlled surface reconstruction in ferroelectric thin films," Nature Communications, Nature, vol. 7(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11318
    DOI: 10.1038/ncomms11318
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    Cited by:

    1. Yong Liu & Mingjian Zhang & Zhuan Wang & Jiandong He & Jie Zhang & Sheng Ye & Xiuli Wang & Dongfeng Li & Heng Yin & Qianhong Zhu & Huanwang Jing & Yuxiang Weng & Feng Pan & Ruotian Chen & Can Li & Fen, 2022. "Bipolar charge collecting structure enables overall water splitting on ferroelectric photocatalysts," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Chao Yang & Rebecca Pons & Wilfried Sigle & Hongguang Wang & Eva Benckiser & Gennady Logvenov & Bernhard Keimer & Peter A. Aken, 2024. "Direct observation of strong surface reconstruction in partially reduced nickelate films," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    3. Sandhya Susarla & Shanglin Hsu & Fernando Gómez-Ortiz & Pablo García-Fernández & Benjamin H. Savitzky & Sujit Das & Piush Behera & Javier Junquera & Peter Ercius & Ramamoorthy Ramesh & Colin Ophus, 2023. "The emergence of three-dimensional chiral domain walls in polar vortices," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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