Negative Heat Capacity for a Cluster of 147 Sodium Atoms
- 12 February 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 86 (7), 1191-1194
- https://doi.org/10.1103/physrevlett.86.1191
Abstract
There exists a surprising theoretical prediction for a small system: its microcanonical heat capacity can become negative. An increase of energy can—under certain conditions—lead to a lower temperature. Here we present experimental evidence that a cluster containing exactly 147 sodium atoms does indeed have a negative microcanonical heat capacity near its solid to liquid transition.Keywords
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