Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 106, Issue 42, Pages 17640-17643Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0908262106
Keywords
high pressure; hydrogen metallization; lithium chemistry
Categories
Funding
- National Science Foundation (NSF) [CHE-0613306, DMR-0601461, DMR-0907425]
- NSF
- National Center for Supercomputing Applications
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [907425] Funding Source: National Science Foundation
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From detailed assessments of electronic structure, we find that a combination of significantly quantal elements, six of seven atoms being hydrogen, becomes a stable metal at a pressure approximately 1/4 of that required to metalize pure hydrogen itself. The system, LiH6 (and other LiHn), may well have extensions beyond the constituent lithium. These hypothetical materials demonstrate that nontraditional stoichiometries can considerably expand the view of chemical combination under moderate pressure.
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