P. Blaise et Sa. Blundell, Melting of sodium clusters in the extended Thomas-Fermi approximation - art. no. 235409, PHYS REV B, 6323(23), 2001, pp. 5409
We study the melting of small sodium clusters Na-N (N = 8,20,40) and Na-N() (N = 53 - 57,93,139,147) using an ab initio treatment of valence electron
s within the extended Thomas-Fermi approximation. The ionic entropy and spe
cific heats are extracted using a multiple-histogram analysis. The smaller
clusters show multiprocess melting, while the larger clusters favor predomi
nantly single-process melting. We find a pronounced maximum in the melting
point around N = 55.