Title: ANALYSIS OF THE FUNDAMENTAL CHARACTERISTICS OF DIAMOND-LIKE CRYSTALS AND LOW-DIMENSIONAL STRUCTURES
Authors: V.G.Litovchenko [LVG@isp.kiev.ua] (Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 45 Nauki avenue, Kiev 03028, Ukraine)

The principle has been developed for systematizing the diamond-like crystals with tetrahedral structure of the elementary cells and with valence chemical bonds, based on the calculation of the lattice constant. The approach proposed permits to predict basic parameters such as energy gap $E_{\mathrm{g}}$, electron affinity (optical work function) X, mechanical hardness H, melting temperature $T_{\mathrm{m}}$, optical phonon frequency etc. These parameters have been calculated and the table is presented for a number of chemical compositions. For materials with mixed chemical bonds (valence and ionic) the corrections can be calculated using Pouling electronegativity conception. The comparison with experiment demonstrates good agreement between the latter and the proposed procedure.

Key words: diamond-like crystal systematization, electron affinity, high melting temperature
PACS: 81.05.Bx, 81.05.Cy, 74.78.-w