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Low-temperature thermostatics of face-centered-cubic metallic hydrogenThe thermostatic properties of a high-symmetry phase of metallic hydrogen with atomic sphere radius between 0.1 and 1.5 bohr are studied, with special emphasis accorded to electronic screening and quantum proton motion. The electron-proton and proton-proton interactions receive a perturbation treatment based on the Singwi dielectric function, while the proton motion is handled by self-consistent harmonic approximation. Quantum behavior is found to be less pronounced than expected, and nuclear magnetism is absent. The phonon spectrum is, however, affected by screening and large proton motion. The zero-point vibrational energy and the superconducting critical temperature are below previous estimates. The crystalline-defect formation energies are a few times the Debye energy, which implies that defects contribute significantly to melting at the lower particle densities.
Document ID
19740053941
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Caron, L. G.
(Sherbrooke, Universite Quebec, Canada; California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
June 15, 1974
Publication Information
Publication: Physical Review B - Solid State
Subject Category
Physics, Solid-State
Accession Number
74A36691
Distribution Limits
Public
Copyright
Other

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