GREEN

A subroutine package for computing Green’s functions of relaxed surfaces by the renormalization method. We present a subroutine package for the computation of Green’s functions of relaxed surfaces and the bulk within the framework of a tight-binding basis. The application of a highly convergent renormalization scheme allows treatment of large unit cells and may include spin-orbit interaction in a suitable parametrization. The one-dimensional semi-infinite solid is solved analytically and serves as a testing example.

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