Everything you always wanted to know about metallic hydrogen but were afraid to ask

Eugene Gregoryanz; Cheng Ji; Philip Dalladay-Simpson; Bing Li; Ross T. Howie; Ho-Kwang Mao

doi:doi:10.1063/5.0002104

Matter and Radiation at Extremes, 2020, 5 (3): 038101, Published Online: Nov. 25, 2020

Everything you always wanted to know about metallic hydrogen but were afraid to ask Download： 534次

Eugene Gregoryanz ^1,2,3,a)Cheng Ji ²Philip Dalladay-Simpson ²Bing Li ²Ross T. Howie ²Ho-Kwang Mao ²

Author Affiliations

¹ Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom

² Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China

³ Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China

Figures & Tables

Fig. 1. Proposed (artistic) P–T phase diagram of H₂. Solid phase lines are a combination of static compression studies of solid hydrogen^9–13 and dynamic compression studies of fluid deuterium.^14,15 Dashed lines represent extrapolations of these combined results. The dark brown color of phases III and V at higher pressures suggests closing of the bandgap.

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Fig. 2. Artistic representation of the gaseous and solid states of hydrogen under different pressures at room temperature (300 K): (a) gaseous molecular state; (b) phase I, with hcp structure; (c) phase IV, with mixed molecular and atomic state; (d) purely atomic and metallic state.

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Eugene Gregoryanz, Cheng Ji, Philip Dalladay-Simpson, Bing Li, Ross T. Howie, Ho-Kwang Mao. Everything you always wanted to know about metallic hydrogen but were afraid to ask[J]. Matter and Radiation at Extremes, 2020, 5(3): 038101.

Everything you always wanted to know about metallic hydrogen but were afraid to ask Download： 534次

Fig. 2. Artistic representation of the gaseous and solid states of hydrogen under different pressures at room temperature (300 K): (a) gaseous molecular state; (b) phase I, with hcp structure; (c) phase IV, with mixed molecular and atomic state; (d) purely atomic and metallic state.

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Everything you always wanted to know about metallic hydrogen but were afraid to ask Download： 534次

Fig. 2. Artistic representation of the gaseous and solid states of hydrogen under different pressures at room temperature (300 K): (a) gaseous molecular state; (b) phase I, with hcp structure; (c) phase IV, with mixed molecular and atomic state; (d) purely atomic and metallic state.

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