Quantum Monte Carlo study of thin parahydrogen films on graphite

• DOI: 10.1016/j.rinp.2024.107737
• Publication Date: 2024-05-08T02:22:45Z
• Authors: Jie-Ru Hu; Massimo Boninsegni
• Keywords: Condensed Matter - Other Condensed Matter; Quantum Monte Carlo; Molecular hydrogen; Superfluidity; Physics; QC1-999; Quantum films; FOS: Physical sciences; Other Condensed Matter (cond-mat.other)

The low-temperature properties of one and two layers parahydrogen adsorbed on graphite are investigated theoretically through Quantum Monte Carlo simulations. We adopt a microscopic model that explicitly includes the corrugation substrate. study phase diagram monolayer up to second layer promotion, possible occurrence superfluidity in layer. obtain results down temperature as low 8 mK. find second-layer promotion occur at considerably greater coverage than obtained previous calculations estimated experimentally; moreover, we no evidence finite superfluid response layer, disproving recent theoretical predictions.