Physicists doubt bold report of metallic hydrogen
نویسندگان
چکیده
منابع مشابه
Ground-state structures of atomic metallic hydrogen.
Ab initio random structure searching using density functional theory is used to determine the ground-state structures of atomic metallic hydrogen from 500 GPa to 5 TPa. Including proton zero-point motion within the harmonic approximation, we estimate that molecular hydrogen dissociates into a monatomic body-centered tetragonal structure near 500 GPa (r(s)=1.23) that remains stable to 1 TPa (r(s...
متن کاملHigh-temperature superconductivity in atomic metallic hydrogen
Superconductivity in the recently proposed ground-state structures of atomic metallic hydrogen is calculated over the pressure range 500 GPa to 3.5 TPa. Near molecular dissociation, the electron-phonon coupling λ and renormalized Coulomb repulsion are similar to the molecular phase. A nearly continuous increase in the critical temperature Tc with pressure is thus predicted in this range, to ∼35...
متن کاملRadiological physicists
JUAN A. DEL REGATO, Radiologicalphysicists, New York, American Institute ofPhysics for the American Association of Physicists in Medicine, 1985, 4to, pp. v, 188, illus., $25.00. Radiology provided perhaps the main route by which physicists entered medicine in the period leading up the Second World War. Among other things, they were needed to develop and service X-ray and radium equipment; to de...
متن کاملCoupled electron-ion monte carlo calculations of dense metallic hydrogen.
We present an efficient new Monte Carlo method which couples path integrals for finite temperature protons with quantum Monte Carlo calculations for ground state electrons, and we apply it to metallic hydrogen for pressures beyond molecular dissociation. We report data for the equation of state for temperatures across the melting of the proton crystal. Our data exhibit more structure and higher...
متن کاملQuantum simulation of low-temperature metallic liquid hydrogen.
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 descripti...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 2017
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature.2017.21379