Conductive dense hydrogen

Molecular hydrogen is expected to display metallic properties under high pressures, but so far experiments performed at low temperatures ( 100 K) have showed that hydrogen remains insulating up to 300 GPa. A transformation of normal molecular hydrogen to a conductive and metallic state at room tempe...

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Bibliographic Details
Published in:Nature materials 2011-12, Vol.10 (12), p.927-931
Main Authors: Eremets, M. I., Troyan, I. A.
Format: Article
Language:English
Subjects:
639/301/1023/1026
639/301/119/995
Biomaterials
Chemistry and Materials Science
Condensed Matter Physics
Cooling
Deuterium
Electric Conductivity
Electrically conductive
Fluids
Hydrogen
Hydrogen - chemistry
letter
Liquids
Low temperature
Materials Science
Metals
Nanotechnology
Optical and Electronic Materials
Phase Transition
Pressure
Pressurizing
Semiconductors
Spectra
Spectrum Analysis, Raman
Superconductivity
Superfluidity
Temperature
Transformations
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Summary:Molecular hydrogen is expected to display metallic properties under high pressures, but so far experiments performed at low temperatures ( 100 K) have showed that hydrogen remains insulating up to 300 GPa. A transformation of normal molecular hydrogen to a conductive and metallic state at room temperature is now observed above 220 GPa. Molecular hydrogen is expected to exhibit metallic properties under megabar pressures. This metal is predicted to be superconducting with a very high critical temperature, T c , of 200–400 K (ref.  1 ), and it may acquire a new quantum state as a metallic superfluid and a superconducting superfluid 2 . It may potentially be recovered metastably at ambient pressures 3 . However, experiments carried out at low temperatures, T
ISSN:1476-1122
1476-4660
DOI:10.1038/nmat3175