β Scribed by H.E. Roman; A. Lorenzoni; G. Benedek; R.A. Broglia
No coin nor oath required. For personal study only.
We propose a new form of carbon in which the atoms are arranged in a self-similar fashion. The hypothetical structure we consider is two-dimensional, having a fractal dimension df= 1 +log 2/lag 3 s 1.63 which we call the Davidene. Our results for the ground state geometries of the aggregate as a function of its size L indicate that the fractal cluster is stable, displaying a small "gap" (x0.16 eV) for large L. A detailed analysis of the energy spectrum shows that it possesses self-similar properties with a fractal dimension d,=O.79+0. 02 for large L.
π SIMILAR VOLUMES
## A comparative 13C-NMR study of several new phases of pressure/temperature-treated C,,, a bundle of carbon nanotubes, graphite and diamond was carried out in the 4-300 K temperature range. It was found that face-centered cubic and rhombohedral high-pressure phases of C, reveal very unusual NMR l