513.001 Molecular and Solid State Physics | |
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van der Waals crystalIn weakly interacting systems, the interaction between two atoms i and j is often described by the Lennard-Jones potential. U(rij) = 4ε((σ/rij)12 - (σ/rij)6). with rij being the interatomic distance. Near T = 0 K, krypton is an fcc crystal with σ = 0.365 nm and ε = 2.25 10-21 J. Calculate the lattice constant and the binding energy per atom assuming that only interactions between nearest neighbor atoms have to be considered. |