Abstract
Clusters of para-hydrogen () have been predicted to exhibit superfluid behavior, but direct observation of this phenomenon has been elusive. Combining experiments and theoretical simulations, we have determined the size evolution of the superfluid response of clusters doped with carbon dioxide (). Reduction of the effective inertia is observed when the dopant is surrounded by the solvent. This marks the onset of molecular superfluidity in . The fractional occupation of solvation rings around correlates with enhanced superfluid response for certain cluster sizes.
- Received 21 April 2010
DOI:https://doi.org/10.1103/PhysRevLett.105.133401
© 2010 The American Physical Society
Synopsis
Microscopic superfluidity
Published 1 October 2010
The size limits of superfluidity are explored in molecular hydrogen clusters.
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