Krypton on graphite: Microstructure at zero temperature
- 15 June 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 27 (12), 7669-7675
- https://doi.org/10.1103/physrevb.27.7669
Abstract
We have calculated the energy associated with different possible configurations of a krypton monolayer on graphite using a microscopic model for the Kr-Kr and Kr-graphite interactions. In the latter case, there is considerable uncertainty with regard to the choice of potential, and calculations have been carried out for a range of parameters. For a potential which is weakly modulated parallel to the graphite plane (such as the one suggested by Steele) the lowest energy per atom is found to be a hexagonal nonregistered configuration. If the modulation is increased by a factor of 2, the () registered configuration becomes the lowest-energy configuration and there will also then be a regime in which hexagonal and striped phases differ in energy by less than 1 K. For the range of potentials of interest, the domain walls are found to be broad and in agreement with predictions from continuum theory.
Keywords
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