Abstract
Recent theoretical studies [K. Joshi, D. G. Kanhere, and S. A. Blundell, Phys. Rev. B 67, 235413 (2003)] predict that melts at around . We have performed calorimetry measurements on unsupported , , , and in an effort to test this prediction. We find that these tin clusters disappear well below their predicted melting temperature due to dissociation. Calorimetry measurements performed up to around show some small features (which may be due to localized structural changes) but no clear melting transitions. Hence, tin clusters in this size regime do not melt—they sublime.
- Received 25 September 2004
DOI:https://doi.org/10.1103/PhysRevB.71.073410
©2005 American Physical Society