Anomalous Thermal Stability of Metastable C_20 Fullerene

Details Anomalous Thermal Stability of Metastable C_20 Fullerene Anomalous Thermal Stability of Metastable C_20 Fullerene

2005-03-19

arxiv.org/abs/cond-mat/0503500v1

Fiz. Tverd. Tel. (St. Petersburg) 47 (2005) 751 [Phys. Solid State 47 (2005) 778].

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Slightly corrected version of the paper submitted to Phys. Solid State

Scientific paper

10.1134/1.1913997

The results of computer simulation of the dynamics of fullerene C_20 at different temperatures are presented. It is shown that, although it is metastable, this isomer is very stable with respect to the transition to a lower energy configuration and retains its chemical structure under heating to very high temperatures, T ~ 3000 K. Its decay activation energy is found to be E_a ~ 7 eV. Possible decay channels are studied, and the height of the minimum potential barrier to decay is determined to be U = 5.0 eV. The results obtained make it possible to understand the reasons for the anomalous stability of fullerene C_20 under normal conditions.

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