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Manuscript Title: Program to calculate elastic Green's functions, displacement fields and interaction energies in cubic materials.
Authors: J.W. Deutz, H.R. Schober
Program title: GFCUBE
Catalogue identifier: ACMS_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 30(1983)87
Programming language: Fortran.
Computer: IBM 3033.
Operating system: MVS.
RAM: 56K words
Word size: 8
Keywords: Solid state physics, Defect, Elasticity, Point defect, Green's function Displacement field, Interaction energy.
Classification: 7.1.

Nature of problem:
In linear elasticity theory a continuous medium is characterized by its Green's function. In the static case this Green's function can be calculated by a one dimensional integration. Also calculated are the first two derivatives yielding displacement fields and interaction energies of point defects.

Solution method:
The three-dimensional Fourier integral defining the Green's function is reduced to a one-dimensional integral.

The method is valid for all cubic materials independent of the magnitude of the anisotropy.

Running time:
0.04 s per distance for Green's function and displacements, 0.6 s per distance for interaction energy.