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<p>Hybrid integration of two-dimensional single-crystalline metal oxides, including semiconductors, dielectrics, ferroelectrics and ferromagnetics, with silicon circuits enables functionalities such as spintronics and neuromorphic and quantum computing, forming a key part of the ‘More-than-Moore’ roadmap. However, synthesizing two-dimensional metal oxide single-crystal films has remained challenging. Here we report a van der Waals surface reconstruction of mica for the general large-scale, unidirectional growth of two-dimensional metal oxides (where M = Co, Fe, Ni, Mn) and their doped counterparts, which seamlessly coalesce into single-crystalline films. Quantum mechanics calculations reveal that reconstructing mica’s oxygen atomic plane is critical for achieving the single-crystal epitaxy of these two-dimensional metal oxides. As an example, centimetre-scale two-dimensional Fe-doped CoO single-crystalline films were grown and exhibit room-temperature ferromagnetic semiconductor properties with a high Curie temperature of up to 430 K. These results demonstrate the power of this synthesis strategy, enabling the exploration of two-dimensional metal oxides for quantum physics and spintronics devices.</p>

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Van der Waals surface reconstruction for oriented epitaxial growth of two-dimensional metallic oxides

  • 期刊论文

  • 发表日期：

    2026年7月23日

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  • Mei Zhao,
  • Kenan Zhang,
  • Shaowen Xu,
  • Yuyin Li,
  • Yuan Lu,
  • Jiawen You,
  • Chenchen Huang,
  • Minting Lei,
  • Zhien Wang,
  • Yunyue Zhu,
  • Tianyi Zhang,
  • Charles B. Musgrave III,
  • Jiangtao Wang,
  • Shuang Pan,
  • Chao Zou,
  • Zhengtang Luo,
  • Ning Dai,
  • William A. Goddard III,
  • Shun Wang,
  • Jing Kong,
  • Lijie Zhang

摘要

Hybrid integration of two-dimensional single-crystalline metal oxides, including semiconductors, dielectrics, ferroelectrics and ferromagnetics, with silicon circuits enables functionalities such as spintronics and neuromorphic and quantum computing, forming a key part of the ‘More-than-Moore’ roadmap. However, synthesizing two-dimensional metal oxide single-crystal films has remained challenging. Here we report a van der Waals surface reconstruction of mica for the general large-scale, unidirectional growth of two-dimensional metal oxides (where M = Co, Fe, Ni, Mn) and their doped counterparts, which seamlessly coalesce into single-crystalline films. Quantum mechanics calculations reveal that reconstructing mica’s oxygen atomic plane is critical for achieving the single-crystal epitaxy of these two-dimensional metal oxides. As an example, centimetre-scale two-dimensional Fe-doped CoO single-crystalline films were grown and exhibit room-temperature ferromagnetic semiconductor properties with a high Curie temperature of up to 430 K. These results demonstrate the power of this synthesis strategy, enabling the exploration of two-dimensional metal oxides for quantum physics and spintronics devices.