dorsal/arxiv
View SchemaTheory of Small Para-Hydrogen Clusters: Magic Numbers and Superfluid Sizes
| Authors | S. A. Khairallah, M. B. Sevryuk, D. M. Ceperley, J. P. Toennies |
|---|---|
| Categories | |
| ArXiv ID | physics/0612161 |
| URL | https://arxiv.org/abs/physics/0612161 |
| Journal | Phys. Rev. Lett. 2007, 98, 183401 |
Abstract
The interplay between magic number stabilities and superfluidity of small para-hydrogen clusters with sizes $N = 5$ to 40 and temperatures $0.5 K \leq T \leq 4.5 $K is explored with classical and quantum Path Integral Monte Carlo calculations. Clusters with $N < 26$ and T $\leq 1.5 K$ have large superfluid fractions even at the stable magic numbers 13, 19, and 23. In larger clusters, superfluidity is quenched especially at the magic numbers 23, 26, 29, 32, and 37 while below 1 K, superfluidity is recovered for the pairs $(27,28)$, $(30,31)$, and $(35,36)$. For all clusters superfluidity is localized at the surface and correlates with long exchange cycles involving loosely bound surface molecules.
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"abstract": "The interplay between magic number stabilities and superfluidity of small\npara-hydrogen clusters with sizes $N = 5$ to 40 and temperatures $0.5 K \\leq T\n\\leq 4.5 $K is explored with classical and quantum Path Integral Monte Carlo\ncalculations. Clusters with $N \u003c 26$ and T $\\leq 1.5 K$ have large superfluid\nfractions even at the stable magic numbers 13, 19, and 23. In larger clusters,\nsuperfluidity is quenched especially at the magic numbers 23, 26, 29, 32, and\n37 while below 1 K, superfluidity is recovered for the pairs $(27,28)$,\n$(30,31)$, and $(35,36)$. For all clusters superfluidity is localized at the\nsurface and correlates with long exchange cycles involving loosely bound\nsurface molecules.",
"arxiv_id": "physics/0612161",
"authors": [
"S. A. Khairallah",
"M. B. Sevryuk",
"D. M. Ceperley",
"J. P. Toennies"
],
"categories": [
"physics.comp-ph",
"physics.atm-clus"
],
"journal_ref": "Phys. Rev. Lett. 2007, 98, 183401",
"title": "Theory of Small Para-Hydrogen Clusters: Magic Numbers and Superfluid Sizes",
"url": "https://arxiv.org/abs/physics/0612161"
},
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