Thermal expansion in small metal clusters and its impact on the electric polarizability

S. Kümmel, J. Akola, M. Manninen

The thermal expansion coefficients of ${\mathrm{Na}}_N$ clusters with $8\le N\le 40$ and ${\mathrm{Al}}_7$, ${\mathrm{Al}}_{13}^{-}$ and ${\mathrm{Al}}_{14}^{-}$ are obtained from {\it a…