Ultrahigh-pressure transitions in solid hydrogen

1994/04/01 by Ho‐kwang Mao, Russell J. Hemley · 13 citations
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #High-pressure geophysics and materials #Quantum, superfluid, helium dynamics

paper · doi:10.1103/revmodphys.66.671

openalex publication_date 1994/04/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/07

Abstract

During the past five years, major progress has been made in the experimental study of solid hydrogen at ultrahigh pressures as a result of developments in diamond-cell technology. Pressures at which metallization has been predicted to occur have been reached (250-300 Gigapascals). Detailed studies of the dynamic, structural, and electronic properties of dense hydrogen reveal a system unexpectedly rich in physical phenomena, exhibiting a variety of transitions at ultrahigh pressures. This colloquium explores the study of dense hydrogen as an archetypal problem in condensed-matter physics.

Citations

• Procedure for loading diamond cells with high-pressure gas
• Diamond anvil cell and high-pressure physical investigations
• On the Possibility of a Metallic Modification of Hydrogen
• Ultrahigh pressures: Optical observations and Raman measurements of hydrogen and deuterium to 1.47 Mbar

Cited by

• Theoretical Evidence for a Reentrant Phase Diagram in Ortho-Para Mixtures of SolidH2at High Pressure
• THE INTERIORS OF GIANT PLANETS: Models and Outstanding Questions
• X-ray diffraction and equation of state of hydrogen at megabar pressures
• Ultrahigh-pressure isostructural electronic transitions in hydrogen
• Biphonons in the Klein-Gordon lattice
• The phases of deuterium at extreme densities
• Structural phase transition at high temperatures in solid molecular hydrogen and deuterium
• Road to Room-Temperature Superconductivity: Tc above 260 K in Lanthanum Superhydride under Pressure
• Solid Molecular Hydrogen: The Broken Symmetry Phase
• Physics of solids under strong compression
• Molecular to Atomic Phase Transition in Hydrogen under High Pressure
• Ho-Kwang Mao [wikipedia]
• Russell J. Hemley [wikipedia]