Pairing instabilities in dense hydrogen
Author:
- 1 June 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (16) , 10963-10971
Abstract
Recent Raman-effect and equation-of-state measurements in highly compressed molecular hydrogen can be combined to show that it should become dynamically unstable towards dissociation at pressures in the vicinity of 3 Mbar. In spite of relatively small shifts in the vibron modes, it can be shown that the intramolecular potential suffers very significant weakening at high compression, this trend being fully understandable by application of the rigorous cusp condition, which constrains the electron density at the protons. At high densities quantum-solid effects are appreciable and when revealed in the band structure through zero-phonon terms can lead to modifications of band-gap closure conditions.Keywords
This publication has 32 references indexed in Scilit:
- Synchrotron X-ray Diffraction Measurements of Single-Crystal Hydrogen to 26.5 GigapascalsScience, 1988
- Ultrahigh pressures: Optical observations and Raman measurements of hydrogen and deuterium to 1.47 MbarPhysical Review Letters, 1985
- Pressure dependence of the optical phonon in solid hydrogen and deuterium up to 230 kbarPhysical Review B, 1983
- Pressure dependence of the vibron in solid hydrogen and deuterium up to 600 kbarPhysical Review B, 1982
- Low-Temperature Equation of State of Molecular Hydrogen and Deuterium to 0.37 Mbar: Implications for Metallic HydrogenPhysical Review Letters, 1982
- The solid molecular hydrogens in the condensed phase: Fundamentals and static propertiesReviews of Modern Physics, 1980
- Combined representation method for use in band-structure calculations: Application to highly compressed hydrogenPhysical Review B, 1977
- Exact-Exchange Crystal Hartree-Fock Calculations of Molecular and Metallic Hydrogen and Their TransitionsPhysical Review Letters, 1975
- Ground-state energies of simple metalsPhysical Review B, 1974
- On the Possibility of a Metallic Modification of HydrogenThe Journal of Chemical Physics, 1935