Elastic properties of Yukawa crystals

We study elastic properties of solid Yukawa systems. Elastic moduli and effective shear modulus of body-centered cubic and face-centered cubic lattices are obtained from electrostatic energies of deformed crystals. For the bcc lattice, our results are well consistent with previous calculations and improve them, while results for the fcc lattice are mostly new. We have also obtained an analytical expression of the elastic moduli for the weak polarization and constructed a convenient approximation for the higher polarization. Published under an exclusive license by AIP Publishing.