Abstract
Thermodynamic, scattering, and nmr measurements on films of H2, HD, D2, and mixtures of these molecules adsorbed on MgO and graphite have found phase diagrams for individual monolayers with solid-liquid-vapor triple points ranging from 7.2K (for the 2nd layer of H2 on MgO) to 5.74K (for a monolayer of H2 on top of a solid layer of D2 on graphite). We review the experimental evidence for the proposed phase diagrams.
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Vilches, O.E. Search for low temperature liquid H2 in 2-D films. J Low Temp Phys 89, 267–276 (1992). https://doi.org/10.1007/BF00692599
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DOI: https://doi.org/10.1007/BF00692599