Abstract
The conductivity and reflectivity of mixtures of hydrogen and helium under high pressure are calculated using first-principles molecular dynamics and the Kubo-Greenwood formula. Hydrogen-helium mixtures have been predicted to undergo demixing below a certain critical temperature. The impact of phase segregation of helium on the optical properties of the mixtures is explored. The change in reflectivity upon demixing is found to vary with frequency with larger variation at higher frequency.
- Received 22 December 2010
DOI:https://doi.org/10.1103/PhysRevB.84.165110
©2011 American Physical Society
