Interatomic Correlations Moments of Atoms in the Two-Dimensional Hexagonal Lattice by Using Morse and Lenard-Jones Potentials

In this work we investigate the interatomic correlation moments in two-dimensional model of a weakly anharmonic crystal (i.e., not very high temperatures) with hexagonal lattice, using the Correlative Method of Unsymmetrized Self-Consistent Field (CUSF). The numerical results are obtained (and compared) by using the Morse and Lenard-Jones potentials.