Discrete Periodic Melting Point Observations for Nanostructure Ensembles

M. Yu. Efremov, F. Schiettekatte, M. Zhang, E. A. Olson, A. T. Kwan, R. S. Berry, L. H. Allen
2000 Physical Review Letters  
We report a study of the thermodynamic properties of indium clusters on a SiN x surface during the early stages of thin film growth using a sensitive nanocalorimetry technique. The measurements reveal the presence of abnormal discontinuities in the heat of melting below 100 ± C. These discontinuities, for which temperature separation corresponds to a spatial periodicity equal to the thickness of an indium monolayer, are found to be related to the atomic "magic numbers," i.e., the number of
more » ... the number of atoms necessary to form a complete shell of atoms at particle surface.
doi:10.1103/physrevlett.85.3560 pmid:11030950 fatcat:3u4r4h3iz5hc3njs5r4n52rd6i