Superfluidity in H2 Films
نویسندگان
چکیده
Path integral Monte Carlo calculations were used to study a 2D system of H2 molecules. The ground state on a flat substrate is a triangular lattice, a localized solid. We find that the introduction of some weakly attractive impurities (specifically alkali metal atoms) in the right concentration s,0.01 Å22d stabilizes a liquid hydrogen phase of concentration 0.04 Å22 which undergoes a Kosterlitz-Thouless superfluid transition below approximately 1.2 K. [S0031-9007(97)04345-7]
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