1304.0971 (M. C. Gordillo et al.)

Second layer of H2 and D2 adsorbed on graphene    [PDF]

M. C. Gordillo, J. Boronat

We report diffusion Monte Carlo calculations on the phase diagrams of para-H2 and ortho-D2 adsorbed on top of a first layer of the same substances on graphene. We found that the ground state of the second layer is a triangular incommensurate solid for both isotopes. The densities for promotion to a second layer and for the onset of a two-dimensional solid on that second layer compare favorably to available experimental data in both cases.

View original: http://arxiv.org/abs/1304.0971