RT info:eu-repo/semantics/article T1 Anomalous Size Dependence in the Melting Temperatures of Free Sodium Clusters: An Explanation for the Calorimetry Experiments A1 López Rodríguez, José Manuel A1 Aguado Rodríguez, Andrés K1 Calorímetros y calorimetría AB The meltinglike transition in unsupported NaN clusters (N=55, 92, 147, 181, 189, 215, 249, 271, 281 and 299) is studied by first-principles isokinetic molecular dynamics simulations. The irregular size dependence of the melting temperatures Tm observed in the calorimetry experiments of Schmidt et al. [ Nature (London) 393 238 (1998)] is quantitatively reproduced. We demonstrate that structural effects alone can explain all broad features of experimental observations. Specifically, maxima in Tm(N) correlate with high surface stability and with structural features such as a high compactness degree. PB The American Physical Society YR 2005 FD 2005 LK http://uvadoc.uva.es/handle/10324/2445 UL http://uvadoc.uva.es/handle/10324/2445 LA eng NO Physical Review Letters, vol. 94, n. 23 (2005), p. 1-4 NO Producción Científica DS UVaDOC RD 25-nov-2024