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On the equivalence of different techniques for evaluating the Green function for a semi-infinite system using a localized basis
2004
Journal of Physics: Condensed Matter
Preserved Fulltext
We discuss several different techniques for evaluating the Green function for a semi-infinite system using a localized basis. We demonstrate that the different techniques are different ways of calculating the self-energy associated with the surface. They give equivalent results but have different convergence properties.
doi:10.1088/0953-8984/16/21/r01
fatcat:cu6npkueqffpjgxplgyylv7mdu