6533b7d5fe1ef96bd12646fa

RESEARCH PRODUCT

The commensurate-incommensurate transition of hydrogen monolayers physisorbed on graphite

Hans J. LauterH. WiechertH. Freimuth

subject

Materials scienceHydrogenNeutron diffractionchemistry.chemical_elementSurfaces and InterfacesCondensed Matter PhysicsMolecular physicsSurfaces Coatings and FilmsCrystallographychemistryPhase (matter)MonolayerMaterials ChemistryGraphite

description

We present a neutron diffraction study of the commensurate-incommensurate (C-IC) transition of hydrogen monolayers physisorbed on the basal planes of exfoliated graphite. It is shown that the solid intermediate phase detected by specific-heat measurements can be described in terms of a striped domain-wall phase with superheavy walls. Comparison with simple models with fixed domain sizes is made. The results are in agreement with recent LEED experiments of Cui and Fain and provide an experimental realization of C-IC transition theories.

https://doi.org/10.1016/0167-2584(87)90491-9