Publication: Superfluidity in H2 films
Start date of the public exhibition period
End date of the public exhibition period
Authors of photography
Person who provides the photography
American Physical Society
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 (~0.01¿¿2) stabilizes a liquid hydrogen phase of concentration 0.04¿¿2 which undergoes a Kosterlitz-Thouless superfluid transition below approximately 1.2 K.
Physical Review Letters, 1997;79(16):3010-3013