TY - JOUR
T1 - Interplay between magic number stabilities and superfluidity of small parahydrogen clusters
AU - Khairallah, S. A.
AU - Sevryuk, M. B.
AU - Ceperley, D. M.
AU - Toennies, J. P.
PY - 2007/5/4
Y1 - 2007/5/4
N2 - The interplay between magic number stabilities and superfluidity of small parahydrogen clusters with sizes N=5 to 40 and temperatures 0.5K≤T≤4.5K is explored with classical and quantum path integral Monte Carlo calculations. Clusters with N<26 and T≤1.5K 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 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.
AB - The interplay between magic number stabilities and superfluidity of small parahydrogen clusters with sizes N=5 to 40 and temperatures 0.5K≤T≤4.5K is explored with classical and quantum path integral Monte Carlo calculations. Clusters with N<26 and T≤1.5K 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 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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U2 - 10.1103/PhysRevLett.98.183401
DO - 10.1103/PhysRevLett.98.183401
M3 - Article
AN - SCOPUS:34247850770
SN - 0031-9007
VL - 98
JO - Physical review letters
JF - Physical review letters
IS - 18
M1 - 183401
ER -