Theoretical studies of the global minima and polarizabilities of small lithium clusters

⿢Theoretical searching of the global minima structures of Li1⿿20 clusters.⿢State-of-the-art calculation of the polarizabilities (α) of Li1⿿20 clusters.⿢A linear correlation investigation of the inverse relationship between α and IP.⿢Thermal effect investigation of the discrepancy between measured and computed α.