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Quantum simulation of low-temperature metallic liquid hydrogen

Author

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  • Ji Chen

    (ICQM and School of Physics, Peking University)

  • Xin-Zheng Li

    (School of Physics, Peking University)

  • Qianfan Zhang

    (School of Materials Science and Engineering, Beihang University)

  • Matthew I. J. Probert

    (University of York)

  • Chris J. Pickard

    (University College London)

  • Richard J. Needs

    (Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge)

  • Angelos Michaelides

    (University College London)

  • Enge Wang

    (ICQM and School of Physics, Peking University)

Abstract

The melting temperature of solid hydrogen drops with pressure above ~65 GPa, suggesting that a liquid state might exist at low temperatures. It has also been suggested that this low-temperature liquid state might be non-molecular and metallic, although evidence for such behaviour is lacking. Here we report results for hydrogen at high pressures using ab initio methods, which include a description of the quantum motion of the protons. We determine the melting temperature as a function of pressure and find an atomic solid phase from 500 to 800 GPa, which melts at

Suggested Citation

  • Ji Chen & Xin-Zheng Li & Qianfan Zhang & Matthew I. J. Probert & Chris J. Pickard & Richard J. Needs & Angelos Michaelides & Enge Wang, 2013. "Quantum simulation of low-temperature metallic liquid hydrogen," Nature Communications, Nature, vol. 4(1), pages 1-5, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3064
    DOI: 10.1038/ncomms3064
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