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Showing 1–8 of 8 results
Advanced filters: Author: Graeme J. Ackland Clear advanced filters

  • Metallic hydrogen environments exist in the cores of gas-giant planets. Here the authors study the solubility of light elements in metallic hydrogen and predict the formation of “hypermolecules” from hydrogenation of normally saturated molecules.

    • Jakkapat Seeyangnok
    • Udomsilp Pinsook
    • Graeme J. Ackland
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-11

  • Hydrogen has multiple molecular phases which are challenging to explore computationally. The authors develop a machine-learning approach, learning from reference ab initio molecular dynamics simulations, to derive a transferable hierarchical force model that provides insight into high pressure phases and the melting line of H2.

    • Hongxiang Zong
    • Heather Wiebe
    • Graeme J. Ackland
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-9

  • Aluminium is regarded as a simple system in which to test for phenomena occurring at high pressure. Ab initio calculations now show that this metal undergoes a surprising transition to an incommensurate structure when it is subjected to extremely high pressures.

    • Malcolm I. McMahon
    • Graeme J. Ackland
    News & Views
    Nature Materials
    Volume: 9, P: 607-608

  • High-pressure studies of chalcogen hydrides reveal complex phase behaviors, challenging existing assumptions about their stability and composition. Here, the authors discover a novel compound, SeH2(H2)2, at pressures above 94 GPa, characterized by a unique tetragonal structure, highlighting the intricate nature of high-pressure chemistry and its implications for material science.

    • Huixin Hu
    • Mikhail A. Kuzovnikov
    • Ross T. Howie
    ResearchOpen Access
    Communications Materials
    Volume: 6, P: 1-7

  • Alkali metals at high pressures have a liquid–liquid transition that is difficult to study in detail. Numerical calculations now suggest that the higher-pressure state is an electride liquid, in which electrons behave like localized anions.

    • Hongxiang Zong
    • Victor Naden Robinson
    • Graeme J. Ackland
    Research
    Nature Physics
    Volume: 17, P: 955-960